In quadrilateral ABCD,angle A + angle D = 180 | vedclass

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(B) In quadrilateral $ABCD$,$\angle A + \angle D = 180^{\circ}$.Since $\angle A$ and $\angle D$ are consecutive interior angles on the same side of th

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Trapezium

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(B) In quadrilateral $ABCD$,$\angle A + \angle D = 180^{\circ}$.Since $\angle A$ and $\angle D$ are consecutive interior angles on the same side of the transversal $AD$ intersecting lines $AB$ and $CD$,their sum being $180^{\circ}$ implies that the lines $AB$ and $CD$ are parallel.By definition,a quadrilateral with at least one pair of parallel opposite sides is called a trapezium.Therefore,the special name that can be given to this quadrilateral $ABCD$ is a trapezium.

In quadrilateral $ABCD$,$\angle A + \angle D = 180^{\circ}$. What special name can be given to this quadrilateral?

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