Geogebra Practical 7 -(ii)

Articles

ICT Standard IX

ICT Standard X

Geogebra Practical 7 -(ii) Draw an angle of 133o and bisect it.

1. Open Geogebra. Click on Tool No 7 and select ‘Angle with given size’. See Figure 1. 2. In the Graphic area click on any place where you want one arm (Point ‘A’) of the angle to be.

Figure 1

3. Click on any other point where you want the vertex to be. (Point ‘B’) 4. In the box that comes up enter the measure of the angle that you want e.g., 133o. See Figure 2

Figure 2

5. Click OK. The angle of the required measure will be drawn. See Figure 3.

Figure 3

6. Click on Tool 2 and select ‘Segment through two points’. See Figure 4

Figure 4

7. Click on the points A followed by B. Then click on the points B followed by A’. 8. The given angle will be drawn. See Figure 5.

Figure 5

9. Select Tool 3 and click on ‘Angle Bisector Tool’. See Figure 6.

Figure 6

10. Click on points A followed by B and A’. The required angle bisector will be drawn. See Figure 7. 11. Save and print your file if required.

Figure 7

George Ferrao