What is the value of the missing angle?

Question

A hexagon is shown. An interior angle at the upper right is labeled x and all other interior angles are labeled clockwise as 75 degrees, 135 degrees, 115 degrees, 75 degrees, and 151 degrees.

A. 129°
B. 153°
C. 169°
D. 720°

I think its C or D.

Answer 1

You are just guessing. Surely D is ridiculous, since and of the interior angles of a convex polygon is less than 180°

However, the six angles must add up to 4*180 = 720°
So add up the ones you have and subtract the total from 720 to get your answer.