I appreaciate very much if someone can help me in the below question.
ABCD is a square. AFC and BFE are straight lines. Given AE = ED. Find the shaded area of the square.
Draw a line fromE parallel to AB meeting AC @ G. The area you seek consists of one squareand 1/2 square side lengths a/2 plus triangle EFG where a is length of large square side.Your problem is then to find the altitude of EFG