Triangle Sum Investigation - Section 2: Triangle Sum Investigation and Practice

 
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  Triangle Sum Investigation
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Triangle Sum Theorem and Special Triangles

Unit 7: Discovering and Proving Triangle Properties
Lesson 2 of 10

Objective: Students will be able to discover and prove the triangle sum theorem.

Big Idea: By investigating the angles of four different types of triangles, students conjecture about the interior angle sum of triangles and ultimately prove the triangle sum theorem.

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10 teachers like this lesson
Subject(s):
Math, Geometry, Triangles, reasoning and proof, Triangle Sum Theorem, Triangle Congruence, triangle similarity
  85 minutes
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