Question

The side view of a house (the"side elevation") is often in the shape of a pentagon. If the angle at the roof is 150 degrees and there are two other angle of 90 degrees , what is the sum of the two angles?

Answer 1

Sum of the interior angles of a pentagon is 180(5 - 2) = 180 x 3 = 540 degrees.
Sum of the two angles is 540 - 150 - 90 - 90 = 210 degrees.