Question

What is m∠A?

A: 50°
B: 130°
C: 35°
D: 95°

Answer 1

50 degrees

Explanation:

using the outside angles, 180 - 85, and 180-145, to get the inner angles. then subtracting them from 180. 180-35-95=50

Answer 2

Answer: A

Explanation:

because 145 is on the outside and is a supplementary line so the angle next to it would be 180-145 = 35

now for 85, the angle next to it would be 180-85 = 95

we now know to angles in the triangle 35 and 95

there is 180 degrees in a triangle

A = 180 - 35 + 95

A = 50