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प्रश्न
A quadrilateral ABCD is a trapezium if ______.
विकल्प
AB = DC
AD = ВС
∠A + ∠C = 180°
∠B + ∠C = 180°
MCQ
रिक्त स्थान भरें
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उत्तर
A quadrilateral ABCD is a trapezium if ∠B + ∠C = 180°.
Explanation:
For a quadrilateral to be a trapezium, at least one pair of opposite sides must be parallel. If ∠B + ∠C = 180°, these interior angles on the same side of transversal BC are supplementary, which proves that side AB is parallel to side DC.
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