Lesson plan

Prove and apply the conjecture that a line dividing two sides of a triangle proportionally is parallel to the third side by using the properties of similarity

teaches Common Core State Standards CCSS.Math.Content.HSG-SRT.B.4 http://corestandards.org/Math/Content/HSG/SRT/B/4
teaches Common Core State Standards CCSS.Math.Practice.MP1 http://corestandards.org/Math/Practice/MP1
teaches Common Core State Standards CCSS.Math.Practice.MP3 http://corestandards.org/Math/Practice/MP3

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