If the red angle is 10 and the blue one is 30, what is the measure of green angle?

0 votes

0 votes

In triangle there are three angles which are opposite to exterior angles red, blue and green.

As opposite angles are equal.

Therefore value of interior angles is equal to value of angle red, blue and green.

In triangle,

<°red+<°blue+<°green=180°

10°+30°+<°green =180°

<°green =180°-40°

=140°

Hence ans is 140°

Why do you think angle red and blue are 10°, 30°?

...