i need help with FORMAL PROOF!

Given: PQRS is a rhombus B is midpoint of segment QC D is midpoint of segment SC Prove: Triangle BAD is an isosceles triangle

You'll need to define C and A
21 January 2012
Find are of Trapezoid ABCD given area of Traingle ABE=30 inches squared, DC= 14 inches and AE= 6 inches.
21 January 2012
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