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Prove that the sum of the measures of fo...

Prove that the sum of the measures of four angles of a quadrilateral is `360^@`.

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ASHOK PUBLICATION ASSAM-Model Question Paper-EXAMPLE
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  14. Consider the following pattern. 2^3 -1^3 = 1 + 2 xx 1 xx 3 3^3 - 2...

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  15. Construct the quadrilateral DEAR, whose DE = 4 cm, EA = 5 cm, AR = 4.5...

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