Question

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Answer 1

Step-by-step explanation:

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Answer 2

Answer:

in rhombus , AB = BC = CD = DA

AO = OC , BO = OD

now , AB^2 = AO^2 + BO^2 ( Pythagoras theorem)

similarly , others too

on adding their sides ,

AB^2 +BC^2 + CD^2 + DA^2 = AC^2 + BD^2

Hence proved dear