Question

A pentagon has four given angles: 50 degrees, 110 degrees, 120 degrees, and 160 degrees. What is the measure of the fifth angle?

140
130
90
100

Answer 1

its 100°

Explanation:

The sum of the angles in a pentagon equal 540 degrees.

so

the fifth angle is

= (540 - 50 - 110 - 120 -160)°

= 100°

hope it helps :)