Proving Quadrilaterals are Parallelograms
We work with the converse of the theorems we learned in the last video to prove, or make sure, that quadrilaterals are parallelogram. I work through two algebraic examples and one two column proof. EXAMPLES AT 2:33 8:43 12:22 Find free review test, useful notes and more at http://www.mathplane.com If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage / profrobbob
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