Question

Two angles of a triangle measure 57 and 46. What is the measure of the largest exterior angle of the triangle?

A.103
B. 123
C.134
D.144

Answer 1

A. 103°

Explanation:

57° + 46° =103°

This shows that the third angle in the triangle is 180°-103°=77°

Therefore the largest exterior angle is 180°-77°=103°