Question

11

Collaborato
05 Use Math Tools Work with a partner, if the
the figure at the right is 40", determine the me
angle without using a protractor.

Answer 1

1) 140°

2) 40°

3) 140°

4) 40°

5) 140°

6) 40°

7) 140°

Explanation:

1) Angles on a straight line = 180°

180° - 40° = 140°

2) Angle 3 is Vertically opposite to Angle 1

So they are the same Angle

3) Angle 4 is Vertically opposite to Angle 2

So they are the same Angle

4) Angle 5 is corresponding to Angle 1

So they are the same angle

5) Angle 6 is corresponding to Angle 2

So they are the same angle

6) Angle 7 is corresponding to Angle 3

So they are the same angle

7) Angle 7 is corresponding to Angle 4

So they are the same angle