Question

15 PTS PLEASE HELPPPP! If you can, please provide explanation!!!!!! I want to understand how this works!!!!

Lines CD and CE are tangent to circle a. If m∠DAE = 140°, what is the measure of ∠DCE?

80°

140°

40°

220°

Answer 1

Answer: 40

Explanation:

140 times 2 = 280

360 - 280 = 80

80 times 1/2 = 40