Question

ABCD is a parallelogram. E and F are any points on BC and DC respectively. prove that ar (AED)=ar (AFB)

Answer 1

triangle BFA and llgm ABCD are on same base AB an D same parallels AB and DC.
area(triangle BFA)=1/2(llgm ABCD).
then write similarly
area(triangle DEA)=1/2area(llgmABCD).
area(triangle BFA)=area(triangle DEA).