What is m∠1?
answer choices:
50,
105,
60,
100

The answer is 100

Explaination
The side angles in the bottom right triangle has 2 sides that are 50 degrees, wich means the other side is 80 since a triangle equals 180 degrees.
50+ 50 + 80 is 180 so this is correct.

A straight line is also 180.

Since this straight line is being intersected, and one side of the intersection is 80, we can subtract 180 by 80
180-80= 100

100 is your answer

50% of students voted for candidate b.