B D Figure 2 Note that the vertex (A) is the center of the circle telling us the congruent adjacent sides are the radii of a circle. Also, we are assuming segments BD and CD are congruent, meaning mBDA and mCDA are 90 and congruent. 4. (2pts each) Assume the mBDA = 50, find the measure of the following angles. a. The mCBA = b. The mBAC = c. The mBAD = d. The mBCA = e. The mCDA =