Answer and Explanation
Your Answer is
Correct Answer is D
Explanation
It can be seen from the meaning of the question that ∠A=∠ACB, because ∠ACB and ∠ECF are opposite angles, so ∠ACB=∠ECF=∠ACB=38. , so ∠B=180-38*2=104.
5. In the figure below, AB is congruent to BC and AE intersects BF at C. What is the measure of∠B?
