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Lesson Plan

Use parallel lines and triangle congruence theorems to prove properties of parallelograms

teaches Common Core State Standards CCSS.Math.Content.HSG-CO.C.11 http://corestandards.org/Math/Content/HSG/CO/C/11
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In this lesson you will learn how to prove the angle and side length properties of parallelograms by using parallel lines and triangle congruence theorems.
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