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# Unit 2.1 Lesson 1 Classifying Triangles

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Author: Diane Wilkens
##### Description:

Students will classify triangles, apply the triangle angle sum theorem and the exterior angle theorem.

Students will learn the classification of triangles by sides and angles. Then will use the theorem that the sum of the angles of a triangle always equals 180 degrees and that an exterior angle of a triangle is equal to the sum of its two remote interior angles.

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Tutorial

## Notes 1 Unit 2.1 Classifying Triangles

Students will classify triangles by sides and angles. They will apply the triangle angle sum theorem and the triangle exterior angle theorem.

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## Classify Triangles Notes 1 Unit 2.1

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Classify Triangles Notes 1 Unit 2.1

Source: skhs bl team

## Classifying Triangles CYU

Check understanding of lesson on classifying triangles, triangle angle sum, and exterior angle theorems.

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Source: skhs bl team

## HW Classifying Triangles Lesson 1 Unit 2.1

Homework for Lesson 1 Classifying Triangles, the sum of the angles of a triangle, the exterior angle theorem.

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Source: skhs bl team