Constructing an angle or triangle using a protractor
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This document provides instructions for constructing angles and triangles using a protractor, ruler, and pencil given specific measurements. For angles, the steps are to rule a horizontal line, place the protractor at one end with the center, mark the desired degree at the edge, and rule a line from the end of the first line to the mark. For triangles, the steps are to rule lines for the two given side lengths, place the protractor at an end to mark the angle degree, rule the third side to complete the triangle, and label all measurements. Practice exercises are provided to construct various angles and triangles.
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This document provides instructions for measuring, calculating, and drawing angles using a protractor. It explains that the objectives are to use a protractor to measure and draw acute and obtuse angles to the nearest degree and to calculate angles on a straight line. It emphasizes the importance of properly aligning the protractor by placing the upside down 'T' at the vertex of the angle being measured. Examples are provided of measuring sample angles using the protractor's degree markings.
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- 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.
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1) The document defines an angle as being formed by two rays with a common endpoint called the vertex. Angles can have points in their interior, exterior, or on the angle.
2) There are three main ways to name an angle: using three points with the vertex in the middle, using just the vertex point when it is the only angle with that vertex, or using a number within the angle.
3) There are four types of angles: acute, right, obtuse, and straight. Angles are measured in degrees with a full circle being 360 degrees.
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Geometric constructions
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Geometric Constructions.pptx
See worked examples showing how to construct polygons using a ruler, pencil, pair of compasses and protractor.
Y5 t2u5bd1 3
- The document provides information on teaching number facts for multiplication tables and angle measurement.
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- Activities involve using protractors to measure angles, deriving angle measures for regular polygons, and exploring properties of interior and exterior angles in 2D shapes.
2 Dimensional Shapes
The document provides instructions on drawing triangles and identifying different types of quadrilaterals. It explains how to construct an accurate triangle using a ruler and compass by drawing three arcs from the endpoints of a base line. It then lists seven types of quadrilaterals and provides the formulas for calculating the area of triangles, parallelograms, and trapezoids.
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This document provides instructions for sketching, drawing, and constructing diagrams in mathematics. It defines sketching as a freehand diagram, drawing as an accurate diagram using instruments, and construction as using only a compass and ruler. The document then describes techniques for using a ruler to measure and draw lines, using a protractor to measure and draw angles, and using a compass to mark lengths on lines. It provides examples of constructing angles, triangles, and regular polygons.
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This document provides step-by-step instructions for creating a necklace at home. It lists the necessary materials, which include beads, thread, pliers, and clasps. The procedures describe determining necklace style and length based on neck measurements. Beads are arranged on a board and threaded onto the stringing material one by one. Crimp beads are used to secure the ends and clasps. Following all the steps results in a homemade beaded necklace.
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The document describes how to draw different regular polygons inscribed in a circle using basic geometric techniques. It explains that a regular hexagon and equilateral triangle can be drawn by marking arcs around a circle using the radius. A regular octagon and square are drawn by bisecting right angles formed by intersecting diameters. A regular pentagon is constructed by drawing perpendiculars and finding midpoints to mark arcs around the circle.
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Intro To Clay
This document provides instructions for working with clay, including proper handling and storage of clay, cleaning procedures, and various hand-building techniques like slab building, coiling, and pinching. It discusses using slab techniques to create parts of a goblet like the cup or stem, and coiling or pinching to form other parts. The document emphasizes being patient, experimenting to solve problems, and not worrying about surface design until building the basic form is complete.
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Constructing an angle or triangle using a protractor
- 1. Constructing an angle or triangle using a Protractor, Ruler and Pencil. L.I. We are learning to construct an angle or triangle using a protractor, ruler and pencil when we are given measurements to work from.
- 2. Constructing an angle. • Step 1: Read the instructions. Instructions Make an angle of 50 °
- 3. Constructing an Angle • Step 2 : Begin by ruling a horizontal line.
- 4. Constructing an Angle • Step 3 : Place centre of Protractor at one end of line
- 5. Constructing an Angle • Step 4 : Mark 50 ° at edge of protractor. X
- 6. Constructing an Angle • Step 5 : Rule line from end of first line to the mark. X
- 7. Constructing an Angle • Step 6 : Label angle that you have created. X 50 °
- 8. Now try for yourself 1. Create a 45 ° angle When you have 2. Create a 90 ° angle finished swap with 3. Create a 75 ° angle a partner to measure 4. Create a 30 ° angle and mark 5. Create a 53 ° angle 6. Create a 120 ° angle 7. Create a 133° angle 8. Create a 17 ° angle 9. Create a 101 ° angle 10. Create a 5 ° angle
- 9. Constructing a Triangle. • Step 1: Read the instructions. Instructions Make a triangle, 1 side is 7 cm long, 1 side is 4 cm long and there is an angle of 45 °.
- 10. Constructing a Triangle. • Step 2 : Begin by ruling a line that is equal to the longer length.
- 11. Constructing a Triangle • Step 3 : Place centre of Protractor at one end of line
- 12. Constructing a Triangle • Step 4 : Mark 45 ° at edge of protractor. X
- 13. Constructing a Triangle • Step 5 : Put 0cm mark on same end of line and line up with 45 ° mark. X
- 14. Constructing a Triangle • Step 6 : Rule a 4cm line along the ruler. X
- 15. Constructing a Triangle • Step 7 : Using the ruler connect end of 4cm line with other end of the 7cm line to complete the triangle. X
- 16. Constructing a Triangle • Step 8 : Label the lines and angles that you were given measurements for. X 4cm 45 ° 7cm
- 17. Now try for yourself 1. Create a triangle with one side 5 cm, one side 10 cm and an angle of 45 °. 2. Create a triangle with one side 7 cm, one side 8 cm and an angle of 30 °. 3. Create a triangle with one side 4 cm, one side 9 cm and an angle of 50 °. 4. Create a triangle with one side 2 cm, one side 7 cm and an angle of 80 °. 5. Create a triangle with one side 6 cm, one side 9 cm and an angle of 15 °. When you have finished swap with a partner to measure and mark