I need to calculate AED, and prove that ABE is isosceles...please help..
I guess you are missing something ....
nope, this is it..I had a similar problem a looong time ago, and received a proper answer. I have been trying to modify that answer to suit this question since it is a different angle that needs to be calculated..I'm having problems doing that..
It's a parallelogram, so \(2x+2y=180\)
Dividing by 2, we get \(x+y=90\), and so \(AED=180-90=90\)
yep, I got the answer as soon as I got home yesterday...thanx for your time!!