Question

Find the measure of angle Y.

A. 115°

B. 65°

C. 43°

D. 22°

Answer 1

According to the property of the triangle, the sum of the two interior angles of a triangle is equal to the opposite exterior angle of that triangle.

Now here,

x is the exterior angle to the triangle and the opposite interior angles to x are 43° and 22°.

Therefore,

x = 43° + 22°

x = 65°

=> Option B (65°) is the correct answer.

Answer 2

The answer is B. 65

Explanation:

add 43 and 22, then subtract that by 180 and that will give you 115. Then subtract 180 and 115 and the answer is 65.