Question

What is the value of y?

A. 36°
B. Cannot be determined
C. 120°
D. 60°

Answer 1

Answer: D

Step-by-step explanation:

Angles of a triangle are 180°

A + B + C = 180

A + 60 + 60 = 180

A = 180 - 120

A = 60

Answer 2

Answer: 60ᴼ

Step-by-step explanation:

All angle measures of the triangle add to equal 180ᴼ. There are already 2 angles with 60ᴼ each.

60 * 2 = 120

So just subtract 120 from 180 to find the third angle

180 - 120 = 60