Question
Short Answer Questions.
What special name can be given to a quadrilateral PQRS if $\angle\text{P}+\angle\text{S}=180^{\circ}?$
What special name can be given to a quadrilateral PQRS if $\angle\text{P}+\angle\text{S}=180^{\circ}?$
✓
Answer
In quadrilateral PQRS, $\angle\text{P}$ and $\angle\text{S}$ are adjacent angles.
Since the sum of adjacent angles $\neq180^{\circ},$ PQRS is not a parallelogram.
Hence, PQRS is a trapezium.
Since the sum of adjacent angles $\neq180^{\circ},$ PQRS is not a parallelogram.
Hence, PQRS is a trapezium.
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