Mathematics 7 - Triangles (Classification of Triangles according to Interior ...Romne Ryan Portacion
The document defines and classifies different types of triangles based on the lengths of their sides and measures of their interior angles. It states that a triangle is formed when three non-collinear points are joined, and defines equilateral, isosceles, and scalene triangles based on whether their sides are all equal, two are equal, or all different lengths, respectively. It also defines acute, right, and obtuse triangles based on whether their interior angles are less than, equal to, or greater than 90 degrees.
This document discusses different systems for measuring angles:
1) Degrees are the most common unit and there are 360 degrees in a full rotation.
2) Revolutions measure a full rotation, with one revolution equaling 360 degrees.
3) Radians measure the angle intercepted by an arc whose length is equal to the radius of the containing circle. One radian is the measure of a central angle that intercepts an arc equal to the radius.
This document discusses triangles and their properties. It defines a triangle as a shape with three connected line segments and three vertices. It notes that the sum of the three interior angles of any triangle is always 180 degrees. It classifies triangles based on the lengths of their sides as scalene (all sides different lengths), isosceles (two sides the same length), or equilateral (all three sides the same length). It also categorizes triangles based on their interior angles as acute (all angles less than 90 degrees), right (one angle of 90 degrees), or obtuse (one angle greater than 90 degrees). Worksheets are assigned from a textbook to practice identifying triangle types and properties.
This document introduces polygons and provides examples of different types of polygons. It defines a polygon as a two-dimensional, closed figure made up of three or more straight line segments that meet at vertices. Common polygons include triangles, quadrilaterals, pentagons, hexagons, and others up to dodecagons. Each polygon type has a specific number of sides and various sub-types are described.
There are seven types of triangles: isosceles, equilateral, scalene, right, obtuse, and acute. An isosceles triangle has two equal sides, an equilateral triangle has three equal sides, and a scalene triangle has no equal sides. A right triangle contains one 90 degree angle, an obtuse triangle has one angle over 90 degrees, and an acute triangle has all angles under 90 degrees. Triangles are named by labeling each vertex with a capital letter and sides are labeled with the lowercase letters of the opposite vertices.
This document defines and classifies different types of polygons. It begins by defining a polygon as a closed figure formed by line segments that intersect only at endpoints. Polygons are then classified as convex, concave, regular, or irregular based on their angles and sides. Specific polygons are also named based on the number of sides, such as triangles having 3 sides, quadrilaterals having 4 sides, etc. Regular polygons are defined as having all congruent sides and angles. The document also provides formulas for calculating the area of regular polygons based on their number of sides and apothem length. Triangles and quadrilaterals are further classified based on side lengths and angle measures.
Trigonometry deals with the sides and angles of triangles and their relationships. It is used in fields like science, business, music, and by professionals like tidal experts and meteorologists. Key concepts in trigonometry include the sine, cosine, and tangent functions, radian measurement, reference angles, quadrants, and the unit circle. Trigonometric functions can be added, subtracted, and multiplied following specific rules.
Mathematics 7 - Triangles (Classification of Triangles according to Interior ...Romne Ryan Portacion
The document defines and classifies different types of triangles based on the lengths of their sides and measures of their interior angles. It states that a triangle is formed when three non-collinear points are joined, and defines equilateral, isosceles, and scalene triangles based on whether their sides are all equal, two are equal, or all different lengths, respectively. It also defines acute, right, and obtuse triangles based on whether their interior angles are less than, equal to, or greater than 90 degrees.
This document discusses different systems for measuring angles:
1) Degrees are the most common unit and there are 360 degrees in a full rotation.
2) Revolutions measure a full rotation, with one revolution equaling 360 degrees.
3) Radians measure the angle intercepted by an arc whose length is equal to the radius of the containing circle. One radian is the measure of a central angle that intercepts an arc equal to the radius.
This document discusses triangles and their properties. It defines a triangle as a shape with three connected line segments and three vertices. It notes that the sum of the three interior angles of any triangle is always 180 degrees. It classifies triangles based on the lengths of their sides as scalene (all sides different lengths), isosceles (two sides the same length), or equilateral (all three sides the same length). It also categorizes triangles based on their interior angles as acute (all angles less than 90 degrees), right (one angle of 90 degrees), or obtuse (one angle greater than 90 degrees). Worksheets are assigned from a textbook to practice identifying triangle types and properties.
This document introduces polygons and provides examples of different types of polygons. It defines a polygon as a two-dimensional, closed figure made up of three or more straight line segments that meet at vertices. Common polygons include triangles, quadrilaterals, pentagons, hexagons, and others up to dodecagons. Each polygon type has a specific number of sides and various sub-types are described.
There are seven types of triangles: isosceles, equilateral, scalene, right, obtuse, and acute. An isosceles triangle has two equal sides, an equilateral triangle has three equal sides, and a scalene triangle has no equal sides. A right triangle contains one 90 degree angle, an obtuse triangle has one angle over 90 degrees, and an acute triangle has all angles under 90 degrees. Triangles are named by labeling each vertex with a capital letter and sides are labeled with the lowercase letters of the opposite vertices.
This document defines and classifies different types of polygons. It begins by defining a polygon as a closed figure formed by line segments that intersect only at endpoints. Polygons are then classified as convex, concave, regular, or irregular based on their angles and sides. Specific polygons are also named based on the number of sides, such as triangles having 3 sides, quadrilaterals having 4 sides, etc. Regular polygons are defined as having all congruent sides and angles. The document also provides formulas for calculating the area of regular polygons based on their number of sides and apothem length. Triangles and quadrilaterals are further classified based on side lengths and angle measures.
Trigonometry deals with the sides and angles of triangles and their relationships. It is used in fields like science, business, music, and by professionals like tidal experts and meteorologists. Key concepts in trigonometry include the sine, cosine, and tangent functions, radian measurement, reference angles, quadrants, and the unit circle. Trigonometric functions can be added, subtracted, and multiplied following specific rules.
A quadrilateral is a plane shape with four sides and four vertices. There are several types of quadrilaterals including parallelograms, squares, rectangles, rhombi, trapezoids, and kites. Each quadrilateral type has distinct properties - for example, parallelograms have two pairs of parallel sides, squares have four equal sides meeting at 90 degree angles, and trapezoids have only one pair of parallel sides. The document also provides formulas for calculating the area of each quadrilateral type based on its dimensions.
Triangles What are the properties of an Isosceles Triangle.pdfChloe Cheney
The document defines and describes properties of isosceles triangles. It begins by classifying triangles into three types based on side lengths: equilateral, scalene, and isosceles. It then discusses properties specific to isosceles triangles, including that they have two equal sides or legs and an unequal base, and angles opposite the equal sides are also equal. Several formulas are provided for calculating properties of isosceles triangles like area, perimeter, and altitude. Examples of isosceles triangles in real life and practice problems with solutions are also included.
This document defines and compares different types of quadrilaterals, focusing on parallelograms. It describes the key properties of parallelograms, rectangles, rhombuses, squares, kites, isosceles trapezoids, including their definitions, angles, sides, and diagonal properties. Diagrams illustrate each shape. The document also shows the relationships between these special quadrilaterals and parallelograms.
here is a ppt on geometrical figures and it gives details all about the different types of geometrical shapes and give many pictures and short definitions on them.....
it is a really good power point presentation.......
An angle is formed by two lines that share a common point called the vertex. Angles are measured in degrees, with a full revolution being 360 degrees. A protractor can be used to both measure and construct angles. Angles are classified as acute (<90 degrees), right (90 degrees), obtuse (>90<180 degrees), or straight (180 degrees). Complementary angles sum to 90 degrees, while supplementary angles sum to 180 degrees.
This document discusses parallel lines and their properties. It defines parallel lines as lines that do not intersect and always have the same distance between them. It then covers different types of angles formed when parallel lines are intersected by a transversal line, including corresponding angles, alternate interior angles, alternate exterior angles, consecutive interior angles, and consecutive exterior angles. It states properties of these angles, such as corresponding angles being congruent and alternate interior angles and exterior angles being congruent. Examples are given of finding missing angle measures using these properties.
The document defines and provides examples of different types of angles:
- Acute, right, obtuse, straight, and reflex angles are defined by their measure in degrees.
- Adjacent angles share a vertex and side. Complementary angles add to 90 degrees. Supplementary angles add to 180 degrees.
- Vertical angles are formed by the same lines at a common vertex. Interior and exterior angles are formed when lines are crossed by a transversal. Alternate interior, exterior, and corresponding angles are pairs of angles in specific positions around a transversal.
1. Radian measure relates the angle measure to the arc length intercepted by the angle on a circle of radius r. If the arc length is equal to r, the angle measure is 1 radian.
2. To use formulas for arc length and area of a sector, the angle measure must be in radians. The document provides conversions between degrees and radians and examples of using the arc length and area formulas.
3. The key ideas are that radian measure relates the angle to arc length on a circle, and formulas require the angle be in radians rather than degrees. Examples show converting between degrees and radians and using the formulas.
This document provides an overview of basic trigonometry. It defines trigonometry as the study of relationships involving lengths and angles of triangles, and notes that it emerged from applications of geometry to astronomy. The document explains the key parts of a right triangle, the trigonometric ratios of sine, cosine and tangent, and the SOHCAHTOA mnemonic. It also covers important angles, Pythagoras' theorem, other trigonometric ratios, the unit circle, and trigonometric functions and identities. Links are provided for additional online resources on trigonometry.
This document provides an overview of trigonometry, including its origins in Greek mathematics, the six main trigonometric functions defined in terms of right triangles, and trigonometric identities. Trigonometry is the study of triangles and relationships between sides and angles, with the six functions—sine, cosine, tangent, cotangent, secant, and cosecant—defined based on ratios of sides. Special angle values and identities are also discussed as important concepts in trigonometry.
The document defines various geometric terms related to circles such as secants, tangents, concentric circles, common tangents, and points of tangency. It also presents three theorems: if a line is tangent to a circle, it is perpendicular to the radius drawn to the point of tangency; if a line is perpendicular to a radius, it is tangent to the circle; and if two segments from the same exterior point are tangent to a circle, they are congruent.
Un triángulo oblicuángulo es aquel que no tiene ángulos rectos. Se resuelve mediante las leyes de senos y cosenos, así como la propiedad de que la suma de los ángulos internos de un triángulo es 180 grados. Las leyes de senos y cosenos permiten calcular lados y ángulos desconocidos de un triángulo oblicuángulo cuando se conocen otros elementos.
This document provides information about trigonometric functions including:
- The objectives are to convert between degrees and radians, recognize trigonometric identities, and solve trigonometric equations.
- Trigonometry has a long history dating back to ancient civilizations for measuring distances and heights. It is now widely used in fields like astronomy.
- It discusses angles, the unit circle, trigonometric ratios, special angle values, identities, conversions between degrees and radians, and solving trigonometric equations.
Imaginary numbers were introduced to represent the square root of negative numbers, since there is no real number solution. René Descartes defined the imaginary unit i as the square root of negative one. Powers of i follow a repeating pattern, where i raised to a power that is a multiple of 4 is 1, and powers increase i by one each time the remainder is 1 higher than the previous power.
A polygon is a closed figure made of line segments that intersect only at endpoints. It has at least 3 sides. Polygons are classified by the number of sides, such as triangles (3 sides), quadrilaterals (4 sides), and pentagons (5 sides). Polygons can also be classified as convex or nonconvex, where a convex polygon's diagonals are inside the figure and a nonconvex polygon has at least one diagonal outside the figure.
The document defines and provides examples of complementary angles, supplementary angles, linear pairs, and vertical angles. It also states the Complement Theorem, Supplement Theorem, Linear Pair Postulate, and Vertical Angle Theorem. Several word problems are included where the value of x and angle measurements are solved for given complementary, supplementary, or congruent angle relationships.
A quadrilateral is a plane shape with four sides and four vertices. There are several types of quadrilaterals including parallelograms, squares, rectangles, rhombi, trapezoids, and kites. Each quadrilateral type has distinct properties - for example, parallelograms have two pairs of parallel sides, squares have four equal sides meeting at 90 degree angles, and trapezoids have only one pair of parallel sides. The document also provides formulas for calculating the area of each quadrilateral type based on its dimensions.
Triangles What are the properties of an Isosceles Triangle.pdfChloe Cheney
The document defines and describes properties of isosceles triangles. It begins by classifying triangles into three types based on side lengths: equilateral, scalene, and isosceles. It then discusses properties specific to isosceles triangles, including that they have two equal sides or legs and an unequal base, and angles opposite the equal sides are also equal. Several formulas are provided for calculating properties of isosceles triangles like area, perimeter, and altitude. Examples of isosceles triangles in real life and practice problems with solutions are also included.
This document defines and compares different types of quadrilaterals, focusing on parallelograms. It describes the key properties of parallelograms, rectangles, rhombuses, squares, kites, isosceles trapezoids, including their definitions, angles, sides, and diagonal properties. Diagrams illustrate each shape. The document also shows the relationships between these special quadrilaterals and parallelograms.
here is a ppt on geometrical figures and it gives details all about the different types of geometrical shapes and give many pictures and short definitions on them.....
it is a really good power point presentation.......
An angle is formed by two lines that share a common point called the vertex. Angles are measured in degrees, with a full revolution being 360 degrees. A protractor can be used to both measure and construct angles. Angles are classified as acute (<90 degrees), right (90 degrees), obtuse (>90<180 degrees), or straight (180 degrees). Complementary angles sum to 90 degrees, while supplementary angles sum to 180 degrees.
This document discusses parallel lines and their properties. It defines parallel lines as lines that do not intersect and always have the same distance between them. It then covers different types of angles formed when parallel lines are intersected by a transversal line, including corresponding angles, alternate interior angles, alternate exterior angles, consecutive interior angles, and consecutive exterior angles. It states properties of these angles, such as corresponding angles being congruent and alternate interior angles and exterior angles being congruent. Examples are given of finding missing angle measures using these properties.
The document defines and provides examples of different types of angles:
- Acute, right, obtuse, straight, and reflex angles are defined by their measure in degrees.
- Adjacent angles share a vertex and side. Complementary angles add to 90 degrees. Supplementary angles add to 180 degrees.
- Vertical angles are formed by the same lines at a common vertex. Interior and exterior angles are formed when lines are crossed by a transversal. Alternate interior, exterior, and corresponding angles are pairs of angles in specific positions around a transversal.
1. Radian measure relates the angle measure to the arc length intercepted by the angle on a circle of radius r. If the arc length is equal to r, the angle measure is 1 radian.
2. To use formulas for arc length and area of a sector, the angle measure must be in radians. The document provides conversions between degrees and radians and examples of using the arc length and area formulas.
3. The key ideas are that radian measure relates the angle to arc length on a circle, and formulas require the angle be in radians rather than degrees. Examples show converting between degrees and radians and using the formulas.
This document provides an overview of basic trigonometry. It defines trigonometry as the study of relationships involving lengths and angles of triangles, and notes that it emerged from applications of geometry to astronomy. The document explains the key parts of a right triangle, the trigonometric ratios of sine, cosine and tangent, and the SOHCAHTOA mnemonic. It also covers important angles, Pythagoras' theorem, other trigonometric ratios, the unit circle, and trigonometric functions and identities. Links are provided for additional online resources on trigonometry.
This document provides an overview of trigonometry, including its origins in Greek mathematics, the six main trigonometric functions defined in terms of right triangles, and trigonometric identities. Trigonometry is the study of triangles and relationships between sides and angles, with the six functions—sine, cosine, tangent, cotangent, secant, and cosecant—defined based on ratios of sides. Special angle values and identities are also discussed as important concepts in trigonometry.
The document defines various geometric terms related to circles such as secants, tangents, concentric circles, common tangents, and points of tangency. It also presents three theorems: if a line is tangent to a circle, it is perpendicular to the radius drawn to the point of tangency; if a line is perpendicular to a radius, it is tangent to the circle; and if two segments from the same exterior point are tangent to a circle, they are congruent.
Un triángulo oblicuángulo es aquel que no tiene ángulos rectos. Se resuelve mediante las leyes de senos y cosenos, así como la propiedad de que la suma de los ángulos internos de un triángulo es 180 grados. Las leyes de senos y cosenos permiten calcular lados y ángulos desconocidos de un triángulo oblicuángulo cuando se conocen otros elementos.
This document provides information about trigonometric functions including:
- The objectives are to convert between degrees and radians, recognize trigonometric identities, and solve trigonometric equations.
- Trigonometry has a long history dating back to ancient civilizations for measuring distances and heights. It is now widely used in fields like astronomy.
- It discusses angles, the unit circle, trigonometric ratios, special angle values, identities, conversions between degrees and radians, and solving trigonometric equations.
Imaginary numbers were introduced to represent the square root of negative numbers, since there is no real number solution. René Descartes defined the imaginary unit i as the square root of negative one. Powers of i follow a repeating pattern, where i raised to a power that is a multiple of 4 is 1, and powers increase i by one each time the remainder is 1 higher than the previous power.
A polygon is a closed figure made of line segments that intersect only at endpoints. It has at least 3 sides. Polygons are classified by the number of sides, such as triangles (3 sides), quadrilaterals (4 sides), and pentagons (5 sides). Polygons can also be classified as convex or nonconvex, where a convex polygon's diagonals are inside the figure and a nonconvex polygon has at least one diagonal outside the figure.
The document defines and provides examples of complementary angles, supplementary angles, linear pairs, and vertical angles. It also states the Complement Theorem, Supplement Theorem, Linear Pair Postulate, and Vertical Angle Theorem. Several word problems are included where the value of x and angle measurements are solved for given complementary, supplementary, or congruent angle relationships.
2. KOADRANTEAK
• Koordenatu ardatzek planoa lau
zatitan banatzen dute. Zati
hauei KOADRANTE deitzen
diegu.
• Erlojuaren kontrako norantza
kontuan hartuta izendatzen
dira: 1. koadrantea, 2.a, 3.a
eta 4.a.
1.2.
4.3.
3. KOADRANTEAK ETA ANGELUAK
• Ardatzetan angeluak horrela
kokatzen dira: erpina jatorrian,
zuzenerdi bat X ardatzean finko,
eta bestea, angeluaren zabalera
kontuan hartuta.
• Angelua positiboa baldin bada,
bigarren zuzenkia erlojuaren
kontrako norantzan kokatzen da.
Negatiboa bada, berriz,
erlojuaren norantza berean.
+
-
4. KOADRANTEAK ETA ANGELUAK
Ondorioz:
• 1. koadrantea: 0º - 90º
• 2. koadrantea: 90º - 180º
• 3. koadrantea: 180º - 270º
• 4. koadrantea: 270º - 360º
• Angelua 360º baino
handiagoa baldin bada, bere
lehenengo bueltako baliokidea
erabiliko dugu.
6. EDOZEIN ANGELUREN
ARRAZOI TRIGONOMETRIKOAK
• Ardatzetan zirkunferentzia
goniometrikoa eta angelu bat
irudikatuak baldin baditugu,
angeluaren zuzenerdi batek
zirkunferentzia puntu batean
ebakitzen du (P). Puntu hori
egokituko diogu angeluari.
• Jatorriarekin eta puntu
horrekin triangelu zuzen bat
osatuko dugu X ardatzarekiko.
10. EDOZEIN ANGELUREN
ARRAZOI TRIGONOMETRIKOAK
• Aurrekoa kontuan hartuta edozein angeluren
sinua eta kosinua kalkula ditzakegu.
• Sinua eta kosinua jakinda, tangentea kalkulatua
dugu, bien arteko zatiketa baita.
• Koadrantez koadrante aztertzen baldin badugu,
konturatuko gara sinua eta kosinuaren zeinuak
aldatzen direla.
16. EDOZEIN ANGELUREN
ARRAZOI TRIGONOMETRIKOAK
• Bukatzeko ikus dezagun zer gertatzen den
koadranteen mugan dauden angeluekin, hau
da, 0º, 90º, 180º eta 270º-ekin:
Angelua Kosinua Sinua Tangentea
0º 1 0 0
90º 0 1 ----
180º -1 0 0
270º 0 -1 ----
360º = 0º 1 0 0