15.) In square ABCD, diagonals AC and BD
intersect at E. Find m<EAD.

2,222 your welcome and here's the work you have to do 13 times 101 and 9 times 101

Complementary angles: angles whose sum is 90 degrees.supplementary angles: angles whose sum is 180 degrees.straight angle: an angle that is worth 180 degrees. (can be a straight  line)right angle: an angle that is worth 90 degrees ( usually marked by a small box and is the angle in a rectangle and square)