Question

What is the measure of DE?
A) 41
B) 40
C) 37
D) 39

Answer 1

The answer is 37 :D

Explanation:

Answer 2

C) 37°

Explanation:

The sum of the vertical angles is equal to the sum of the intercepted arcs:

39° + 39° = 41° + arc DE

78° -41° = arc DE = 37°