Question

A heptagon has angles that measure 120°, 110°, 140°, 135°, 160°, 100°, and b. What is b?

Answer 1

135

Explanation:

Answer 2

Here,

We know that,

Sum of interior angles of a heptagon=900°

So,

b+120+110+140+135+160+100=900

or, b+765= 900

or, b=900-765

Therefore, b= 135°