Get BF=DE
AAS should only prove that EGD FGB is congruent.
2. Prove that △ACD is congruent △AED [it is not necessary to prove congruence ... the distance from the point on the bisector of the angle to both sides of the angle is equal ~]
Get CD=DE AC= AE.
AB=AE+EB=8
So AB=CB+EB=8
CB=CD+DB
So AB=ED+BD+BE
Perimeter ~ See you later ~ ~
3.∠ 1+∠AEH+∠AHE= 180
∠2+∠BHD+∠ ADB = 180
There are two right angles ... a set of diagonal angles.
De ∠ 1=∠2 Open
Prove AEH congruence BEC ..
Get AH=BC
An isosceles triangle with three lines in one .. d is the midpoint of BC. ...
2BD=BC
∴2BD=AH
Ho ~ I'm finished ... I'm so tired ... I'm just making a rough call ... I'm sorting out the process myself ~ Hehe ~ Come on!