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Doubling the Area of a Square by Construction

Given a squar...

Question

Given a square ABCD of side 10 M and another quadrilateral is formed by joining midpoints of all side of the given figure.If the area of square ABCD =(R) area of EFGH.Then find the value of k what can be said about the quadrilateral EFGH?

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what is the value of k
Please specify what is k

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