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Topic: how do i prove the following?
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Johny

Posts: 4
Registered: 12/10/04
how do i prove the following?
Posted: Mar 13, 2004 12:29 AM
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If ABCD is any quadrilateral and P and Q are the midpoints of its
diagonals, prove

Vector (AB) squared + Vector (BC) squared + Vector (CD) squared +
Vector (CA) squared = Vector (AC) squared + Vector (BD) squared + 4 *
Vector(PQ) squared





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