Question

What is the measure of the missing angle?

A.
20°

B.
50°

C.
60°

D.
40°

Answer 1

D. 40 degrees

This is the answer because 70+70=140
There is 180 degrees in a Triangle. So you must subtract 140 from 180.
180-140=40.

Answer 2

The answer would be D because triangles add up to 180 degrees and the two angles together only add up to 140, so the missing angles would be 40 degrees