Question

Please solve prove that AD=2CD

Answer 1

i do not have angle sumbol in keyboard so L is my angle symbol

bc||ad
so, Ldap=Lapb
so Lbap=Lapb
if 2 angles are same then the 3rd will also be same as an isosceles triangle can not exist in this parallelogram

so La Lb Lp are all equal
in ||gm opp.sides are =
so dc=ab
and ab=ap=bp
we know that 2bp=bc
and bp=dc as well as bc=ad
so 2bp=bc and thus
2dc=ad
hence proved.

Answer 2

answer..................