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[" 2.Tha "/PQR" ,if "PQ=QR" and "L,M" an...

[" 2.Tha "/_PQR" ,if "PQ=QR" and "L,M" and "N" are the mid-points of the sides "PQ" .QRand "RP],[" respectively.Prove that "LN=MN" ."],[" 3.In Fig."10.23,PQRS" is a square and "SRT" is an equilateral triangle.Prove that "]

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