In the figure, line `PQ||` side `BC` then write the ratio in which sides `AB` and `AC` are divided proportionately. Also give your reason.

In the given figure, PQ||AB and PR||AC . Prove that QR||BC

In the adjoining figure PR||AB, PQ||BC and QR||AC. Then what is the relation between AC and QR?

Any line parallel to the parallel sides of a trapezium divides the non-parallel sides proportionally.

In the figure, M and N are the midpoints of sides PQ and PR respectively . If MN =6 cm then find QR. State your reason .

In the adjoining figure D, E and F are the mid-points of the sides BC, AC and AB respectively. triangle DEF is congruent to triangle :

In the adjoining figure, DeltaPQR is formed by the sides PQ, QR and RP which are drawn parallel to sides AB,BC and CA respectively of DeltaABC. Prove that " "PQ+QR+RP+2(AB+BC+CA).

in Delta ABC , a line parallel to side BC cuts the side AB and AC at points D and E respectively and also point D divide AB in the ratio of 1 : 4 . If area of Delta ABC is 200 " cm"^2 , then what is the area (in " cm"^2 ) of quadrilateral DECB?