In the given figure, ABCD and DPQR are parallelograms. Area of ABCD is equal to the area of _______.
(ii)area ||gm ABCD =2× area ΔDCR (||gm is twice the area of Δ on the same base and between the same ||'s)
(iii)Similarly, area ||gm DPQR =2× area ΔDCR
From (ii) and (iii)
Area of ABCD is equal to the area of DPQR.