Purple Comet 2018 MS problem 8
Source:
March 19, 2020
geometry
Problem Statement
On side of regular pentagon there is an equilateral triangle , and on side of the pentagon there is a square as shown. Find the degree measure of angle .
https://cdn.artofproblemsolving.com/attachments/7/7/0d689d2665e67c9f9afdf193fb0a2db6dddb3d.png