Proving Theorems About Triangles


Resource ID#: 119057 Primary Type: Original Student Tutorial
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Use properties, postulates, and theorems to prove a theorem about a triangle. In this interactive tutorial, you'll also learn how to prove that a line parallel to one side of a triangle divides the other two proportionally. 

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General Information

Subject(s): Mathematics
Grade Level(s): 9, 10, 11, 12
Intended Audience: Educators educators, Students
Keywords: Similarity, Similar Triangles, theorems about triangles, corresponding angles:, corresponding sides , Angle-Angle Similarity , Side-Angle-Side Similarity, The Triangle Proportionality Theorem, alternate interior angles, The Segment Addition Postulate
Instructional Component Type(s): Original Student Tutorial
Resource Collection: Original Student Tutorials Mathematics - Grades 9-12

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