Use the following information to answer questions 20-22.

In the figure shown below, each side of square ABCD is 6 inches long. Point E lies inside the square, forming the equilateral triangle ΔECD.

21. What is the measure of ∠BCE ?

Answer and Explanation

Your Answer is

Correct Answer is C

Explanation

Each interior angle of a square measures 90 degrees, and each interior angle of an equilateral triangle measures 60 degrees, so the angle BCE measures 30 degrees. Choose C.