Question

This jewelry box has the shape of a regular

pentagon. It is packaged in a rectangular box as
shown here. The box uses two pairs of congruent
right triangles made of foam to fill its four corners.
Find the measure of the foam angle marked.

Answer 1

the interior angles of a pentagon = 540

540/5 = 108

angles on a line add up to 180

180- 108 = 72

72/2 = 36

X = 36°