Question

In the figure below, lines L and M are parallel and line AB = line BC = line AC. What is the measure of the exterior angle

at angle C?

*check the picture*

Answer 1

120º

Explanation:

angles of an equilateral triangle are equal so..

180 ÷ 3 = 60º

to get the exterior m⦣C

180 - interior m⦣C = exterior m⦣C

180º - 60º = 120º