Question

8.

What is the measure of angle x in the figure?
40°
A 69°
B 71°
C 109°
D 111°

Answer 1

C 109

Explanation:

First add all the known angles inside the triangle first to get 109°

Then since all angles in a triangle add to 180°

you take away 109 from 180 so

180-109 which equals 71

Then since all angles on a straight line add up to 180°

you take 71 from 180 so

180-71 = 109

so x = 109°