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Outline

  1. Lesson 9 - Angle Theorems of a Triangle
    1. Sum of the Angles in a Triangle
    2. Triangle Exterior Angle-Sum Theorem

Lesson 9 - Angle Theorems of a Triangle

Author:Mr. Coffie
This book contains GeoGebra pages that explore the theorems discussed in 10th grade geometry: the triangle angle-sum theorem and the triangle exterior angle-sum theorem.

  • Sum of the Angles in a Triangle

  • Triangle Exterior Angle-Sum Theorem

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Sum of the Angles in a Triangle

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