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| 1. |
PQRS is a parallelogram in which |
| Answer» GIVEN that PQRS is parallelogram,OPPOSITE angles in a parallelogram are equal.i.e, ∠P=∠R and ∠Q=∠S∴ If ∠Q=∠S then ∠Q−∠S=0°Hence, the ANSWER is 0°. | |