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# Triangle Classification

## Categories of triangles based on angle measurements or the number of congruent sides.

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

## Triangle Classification

This concept teaches students how to classify triangles based on their angles and sides.
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## Classifying Triangles

Learn to classify triangles.
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## Triangle Classification

Discover how to classify triangles.
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• PLIX

## Triangle Classification: Types of Triangles on a Geoboard

Triangle Classification Interactive
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• PLIX

## Triangle Classification: The Obtuse Triangle

Triangle Classification Interactive
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• Video

## Triangle Classification Principles

This video gives more detail about the mathematical principles presented in Triangle Classification.
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• Video

## Triangle Classification Examples

This video shows how to work step-by-step through one or more of the examples in Triangle Classification.
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## Triangle Classification Quiz

Triangle Classification quiz.
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• Critical Thinking

## Triangle Classification Discussion Questions

A list of student-submitted discussion questions for Triangle Classification.
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• Real World Application

## Bridges Over Troubled Water

Find out how you can build bridges from triangles.
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• Real World Application

## Triangle Classification

How many triangles can you identify in the world around you?
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• Real World Application

## Flags Flying High

Learn about the only national flag that is not in the shape of a quadrilateral.
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• Study Guide