Question

Find the measure of each angle indicated.

23)

A) 125°
C) 120°
B) 110°
D) 112°

Answer 1

B

Explanation:

The exterior angles of the triangle sum to 360° , then

? + 107° + 143° = 360°

? + 250° = 360° ( subtract 250° from both sides )

? = 110° → B