Question

Determine the measure of the interior angle at vertex E.

A. 135
B. 45
C. 225
D. 75

Answer 1

135

Explanation:

Answer 2

135

Explanation:

The sum of the interior angles of a pentagon is 540

3x+3x+2x+2x+2x = 540

12x = 540

Divide by 12

12x/12 = 540/12

x = 45

E = 3x = 3*45 = 135