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प्रश्न
In quadrilateral ABCD, ∠A + ∠D = 180º. What special name can be given to this quadrilateral?
उत्तर
Given: In quadrilateral ABCD, ∠A + ∠D = 180º.
We know that the sum of the two consecutive angle is 180º.
So, pair of opposite side AB and CD are parallel.
Since, the quadrilateral ABCD is trapezium.
Hence, special name can be given to this quadrilateral is trapezium.
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