Kedon W. answered 11/21/18
GMAT, GRE, SAT/ACT Tutor and Grade/Secondary level math/english
1) When you do the problem, draw the diagram accurately.
2) Utilize the Pythagorean Theorem to get the initial triangle lengths (which will also help in finding the measure of the sides of the square)
3) You have to use the area of a triangle formula at the end to find ADE, but you will have to use it a time OR two (depending on your creativity) to find the height of ADE.