E and F are points on the sides PQ and PR respectively of a `DeltaPQR`. Show that `Efabs()QR`. If PQ = 1.28 cm,PR= 2.56 cm,PE = 0.18 cm and PF= 0.36 cm.

E and F are points on the sides PQ and PR respectively of DeltaP Q R . For each of the following cases, state whether EF || QR: (i) PE = 3.9 cm. EQ = 3 cm. PF = 3.6 cm and FR = 2.4 (ii) PE = 4 cm. QE = 4.5 cm. PF = S cm and RF = 9 cm (iii) PQ = 1.28 cm, PR = 2.56 cm, PE = 0.18 cm and PF = 0.36 cm

In the given figure L, M and N are mid point of the sides PQ, PR and QR respectively of DeltaPQR . If PQ = 4.4 cm, QR = 5.6 cm and PR = 4.8 cm then find the perimeter of DeltaLMN .

A and B are respectively the points on the sides PQ and PR of a Delta PQR such that PQ =12.5 cm, PA= 5 cm, BR = 6 cm and PB = 4 cm. Is AB abs QR? Give reason for your answer.

In the adjoining figure, S and T are points on the sides PQ and PR respectively of DeltaPQR such that PT=2cm, TR=4 cm and ST is parallel to QR. Find the ratio of the ares of Delta PST and Delta PQR .

S and T are points on the sides PQ and PR , respectively of Delta PQR, such that PT=2cm,TR=4cm and ST is parallel to QR.Find the ratio of the areas of Delta PST and Delta PQR .

Points E and F respectively lie on sides PQ and PR of DeltaPQR . For condition given below state whether EF||QR PE = 4 cm, QE = 4.5 cm, PF = 8 cm and RF = 9 cm

Points E and F respectively lie on sides PQ and PR of DeltaPQR . For condition given below state whether EF||QR PE = 3.9 cm, EQ = 3 cm, PF = 3.6 cm and FR = 2.4 cm