Q&A #3945

Teachers' Lounge Discussion: Coordinate proofs

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From: Ritchie Toussaint

To: Teacher2Teacher Public Discussion
Date: 2003021719:00:10
Subject: Coordinate Proofs

Please help me! How can I write a coordinate proof to show that the diagonals of a rectangle are congruent? Also, How can I find the perimeter and area of Triangle ABC if A= (-4,3) B=(11,3) C=(11,11)

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