If 2a = 80 and b = c, what is the measure of bA.) 40B.) 50C.) 80D.) 100​

Answer:From what I can tell from the image, b is equivalent to B.) 50°Step-by-step explanation:So to start off 2a=80° there is 2 a's. so  you subtract 80° from 180° to get 100°.now b=c and their is 100° left over. So 100°/2 is 50° because if b=50° and c=50° both angles equal 100°.