Mathematics
Mathematics, 21.12.2019 18:31, megamorph

In a quadrilateral abcd, angle a + angle d = 90°. prove that ac^2 + bd^2 = bc^2 + ad^2

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In a quadrilateral abcd, angle a + angle d = 90°. prove that ac^2 + bd^2 = bc^2 + ad^2...

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