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Question

In the figure,LMN=90°, LKN=90° and seg MKseg LN.Prove that R is the mid-point of seg MK.

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Solution

InLMN,LMN=90° (Given)seg MRhypotenuse LN (Given ) MR2=LR×RN ...(i) [By the property of geometric mean]In LKN,LKN=90° (Given)Seg KRhypotenuse LN (Given )KR2=LR×RN .....(ii) [By the property of geometric mean]MR2=KR2 [From (i) &(ii) ]So, MR=KR R is the mid-point of seg MK.

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