If ABCD is a parallelogram then:
AB is parallel to CD
CD is parallel to DA
AB is parallel to BC
AB is parallel to AC
In the given figure ABCD is a parallelogram. If area of parallelogram ABCD = 1728 square units, then area △ BEC = ____ square units.
In a parallelogram ABCD, P is a point in interior of parallelogram ABCD. If ar (||gm ABCD) = 18 cm2 then [ar ∆APD) + ar(∆CPB)] is :