Question

what is the sum of the measure of the exterior angle of a triangle to exterior angle of a triangle are 125 degree and 20 degree respectively find the measure of the third exterior angles

Answer 1

We know that sum of all exterior angle of a triangle is equal to 360 degree.

Measure of third angle = 360 degree - (125+20) degree
= 360 - 145
= 215 degree




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Answer 2

3rd angle= 360°- 125°-20°= 215°