Page 169 - Start Up Mathematics_5

(c) (d)
11 12 1 11 12 1
10 2 10 2
9 3 9 3
8 4 8 4
7 6 5 ___; ___________ 7 6 5 ___; ___________

INDIVIDUAL ACTIVITY

To make a right angle tester
Things We Need: A sheet of paper, a bangle, a pencil and a pair of scissors

How To Do:

1. Take a sheet of paper and trace a bangle on it.

2. With the help of scissors, cut out this circle.

3. Fold the circle into two equal halves.

4. Again fold the folded circle into two equal halves.

5. The angle formed at the centre of the circle is a right angle.

Use this right angle tester to check whether the given angles are right angles or not.

161