In triangle PQR,A and B are midpoints of segment PQ and segment RQ,respectively.If PR=16,measure of angle P is 58 degrees, and measure of angle Q is 38 degrees, what is measure of angle ABR?

3 answers

angle R = 180-58-38 = 84°

Now you can use the fact that AB║PR to use corresponding angles and their supplements to find the other two angles of the trapezoid.
96 degrees?
That's what I get.