Geometrical
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A point is represented by a dot with no dimensions. A ray extends from an endpoint in one direction. A plane is a flat surface that extends indefinitely. An angle is formed by two rays with a shared endpoint. A triangle has three sides and three angles. A quadrilateral is a four-sided figure with line segments that connect four points without intersecting except at endpoints. A circle is a set of points equidistant from a fixed center point. Key elements of a circle include the circumference, diameter, radius, chord, arc, sector, segment, and tangent.
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Chapter 1 ( Basic Concepts in Geometry )
Chapter 1 Basic Concepts in Geometry
1.1 Points, Lines and Planes
1.2 Line Segment
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1.4 Some Special Angles
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As one of my requirements for my demonstration. I am sharing this slide to also help you in your future needs.
Thank you and God bless.
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As one of my requirements for my demonstration. I am sharing this slide to also help you in your future needs.
Thank you and God bless.
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- 5. A point is usually represented by a small dot and is name by a single capital letter of alphabet<see fig.1>.It has no magnitude i.e. has no length, breadth or thickness. Fig.1
- 10. A Fig.2 B
- 12. A ray is a part of a line, which has one end point, and extends indefinitely on the other side<see fig.1> A
- 15. A plane is a flat surface that extends indefinitely in all directions. The surface of the wall is an example of a plane.<see fig.1>. Fig.1
- 17. A B O An angle is formed by two rays starting from the same initial point. The initial point O is called the vertex. Rays OA and OB are called the arms of the angle.
- 19. A B C TRIANGLE Triangle is a three side closed figure formed by three line segment intersect in pairs A,B and C are known as vertices of the Triangle.
- 20. A TRIANGLE Have Three side AB, BC and CA. B C
- 21. TRIANGLE HAVE THREE ANGLE <A, <B, < C.
- 24. BC & AD are opposite sides. B C A D A quadrilateral is a four sided figure. ’ Quadri ’ means four, and ‘ lateral ‘ means sides. If A,B,C and D are four points in a plane such that no three of them are collinear and the line segments AB,BC,CD and DA do not intersect except at their end-points, then the figure formed by these four line segments is called the quadrilateral ABCD. ADJACENT SIDES
- 26. A circles a set of points on a plane which are at the same distance from a fixed point called centre (O).
- 27. Circumferen ce The circumferen ce of a circle is the distance around the outside of a circle Diamet er The diameter of the circle is the distance from one side to the other passing through the centre of the circle
- 28. Chord A chord is a line touching the circumference of the circle at two points Radius The radius is the line connecting the centre of the circle and the circumference
- 29. An arc is the part of the circumference at the edge of a sector A sector is the part of a circle between two radii and an arc Sector Arc
- 30. A segment is the part of a circle between a chord and an arc Segme nt A tangent is a straight line which touches a circle at one point Tangent
- 31. Copy the two diagrams carefully into your book Label your two diagrams using the words below Radius Diameter Tangent Arc Sector Circumference Segment Chord