PQRS is a quadrilateral, PR and QS intersect each other at O. In which of the following cases, PQRS is a parallelogram?(a) ∠P = 100°, ∠Q = 80°, ∠R = 95°(b) ∠P =85°, ∠Q = 85°, ∠R = 95°(c) PQ = 7 cm, QR = 7 cm, RS = 8 cm, SP = 8 cm(d) OP = 6.5 cm, OQ = 6.5 cm, OR = 5.2 cm, OS = 5.2 cm

PQRS is a quadrilateral, PR and QS intersect each other at O. In which

1.	PQRS is a quadrilateral, PR and QS intersect each other at O. In which of the following cases, PQRS is a parallelogram?(a) ∠P = 100°, ∠Q = 80°, ∠R = 95°(b) ∠P =85°, ∠Q = 85°, ∠R = 95°(c) PQ = 7 cm, QR = 7 cm, RS = 8 cm, SP = 8 cm(d) OP = 6.5 cm, OQ = 6.5 cm, OR = 5.2 cm, OS = 5.2 cm
Answer» PQRS is a quadrilateral, PR and QS intersect each other at O. In which of the following cases, PQRS is a parallelogram? (a) ∠P = 100°, ∠Q = 80°, ∠R = 95° (b) ∠P =85°, ∠Q = 85°, ∠R = 95° (c) PQ = 7 cm, QR = 7 cm, RS = 8 cm, SP = 8 cm (d) OP = 6.5 cm, OQ = 6.5 cm, OR = 5.2 cm, OS = 5.2 cm