ABCD is a quadrilateral,AB and CD are parallel, P and Q are the midpoints of the sides BC and AD respectively. They, the value of `bar(AB)+bar(DC)` is -

ABCD is a parallelogram, P and Q are the mid-points of the sides bar(AB) " and " bar(DC) respectively. Show that bar(DP) " and " bar(BQ) trisect bar(AC) and are trisected by bar(AC) .

In DeltaABC , if D, E, F are the midpoints of the sides BC, CA and AB respectively, then what is the magnitude of the vector bar(AD)+bar(BE)+bar(CF) ?

In the adjacent figure ABCD is a parallelogram P and Q are the midpoints of sides AB and DC respectively. Show that PBCQ is also a parallelogram.

In the adjacent figure ABCD is a parallelogram P and Q are the midpoints of sides AB and DC respectively. Show that PBCQ is also a parallelogram.

In the adjacent figure ABCD is a parallelogram P and Q are the midpoints of sides AB and DC respectively. Show that PBCQ is also a parallelogram.

In the adjacent figure ABCD is a parallelogram P and Q are the midpoints of sides AB and DC respectively. Show that PBCQ is also a parallelogram.

ABCD is a parallelogram If M and N are the midpoints of BC and DC respectively,If bar(AM)+bar(AN)=lambda(bar(AC)) then value of lambda

ABCD is a quadirlateral in which AD= BC. If P,Q,R,S be the midpoints of AB,AC,CD and BD respectively, show that PQRS is a rhombus.