\(ABCD\) and \(EFGH\) are squares. Find \([EFGH].\)
By Pythagoras, [EFGH] = 40.
Δ HME ≅ Δ EDF
AM = HM = ED = 5
EM = DF = 3
EF = sqrt(ED2 + DF2)
[EFGH] = 34 square units
+1694 
