In triangle `Delta PQR`, E and F are points on the sides PQ and PR respectively. State whether EF ||QR or not?
(i) PE = 3.9 cm EQ = 3 cm PF = 3.6 cm and FR = 2.4 cm

In triangle Delta PQR , E and F are points on the sides PQ and PR respectively. State whether EF ||QR or not? (ii) PE = 4 cm, QE = 4.5 cm, PF = 8 cm and RF = 9 cm.

In triangle Delta PQR , E and F are points on the sides PQ and PR respectively. State whether EF ||QR or not? (iii) PQ = 1.28 cm PR = 2.56 cm PE = 1.8 cm and PF = 3.6 cm

E and F are points on the sides PQ and PR respectively of a trianglePQR . For each of the following cases, state whether EF||QR PE= 3.9 cm, EQ= 3cm, PF= 3.6cm" and "RF= 2.4 cm

In DeltaABC , E and F are the midpoints of sides AB and AC respectively. If EF=5cm, find BC.

E and F are points on the sides PQ and PR respectively of a trianglePQR . For each of the following cases, state whether EF||QR PE= 4 cm, EQ= 4.5 cm, PF= 8 cm" and "RF= 9 cm

In DeltaABC , P and Q are points on sides AB and AC respectively. For each of the following cases, state whether PQ||BC or not : AP= 8 cm, PB= 6 cm, AQ= 12 cm, AC= 21 cm

In DeltaABC , P and Q are points on sides AB and AC respectively. For each of the following cases, state whether PQ||BC or not : AP= 8 cm, PB= 8 cm, AQ= 7 cm, AC= 15 cm

In DeltaABC , D and E are points on the sides AB and AC respectively such that DE||BC . If AB= 6.75 cm, AC= 8.50 cm" and "EC = 6.80 cm . Then find BD.

In DeltaABC , P and Q are points on sides AB and AC respectively. For each of the following cases, state whether PQ||BC or not : PB= 5 cm, AB= 12 cm, CQ= 7.5 cm, QA= 10.5 cm

E and F are points on the sides PQ and PR respectively of a trianglePQR . For each of the following cases, state whether EF||QR PQ= 1.28 cm, PR= 2.56 cm, PE= 0.18 cm" and "PF= 0.36 cm