ABCD is a parallelogram. L and M are respectively mid points of sides AB and DC. Prove that LD and MB trisects diagonals AC.

In Figure,ABCD is a parallelogram.E and F are the mid-points of the sides AB and CD respectively.Prov that the line segments AF and CE triset (divide into three equal parts) the diagonal BD.

ABCD is a parallelogram. E and F are mid-point of side AB and CD respectively. AF and CE intersect diagonal BD at P & Q respectively. If BD = 15 cm, find PQ.

ABCD is a parallelogram. P and R are the midpoints of DC and BC respectively. The line PR intersects the diagonal AC at Q . The distance CQ will be equal to

ABCD is a parallelogram.L and M are points on AB and DC respectively and AL=CM. prove that LM and BD bisect each other.

In a parallelogram ABCD, points E and F are respectively midpoint of sides AB and CD (see the adjacent figure). Prove that line segment AF and EC trisect diagonal BD.

ABCD is a parallelogram.If L and M are the mid-points of BC and DC respectively,then express vec AL and vec AM in terms of vec AB and vec AD Also,prove that vec AL+vec AM=(3)/(2)vec AC .

In the given figure, ABCD is a parallelogram and M, N are the mid-points of AB and CD. The value of theta is