# 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

by CK-12 //at grade
This concept teaches students how to classify triangles based on their angles and sides.
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## Classifying Triangles

by CK-12 //at grade
Learn to classify triangles.
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## Triangle Classification

by Dawn Sterzinger //at grade
This concept teaches students how to classify triangles based on their angles and sides.
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## Triangle Classification Student Textbook

by Dawn Sterzinger //at grade
This concept teaches students how to classify triangles based on their angles and sides.
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## Triangle Classification (A-1)

by LISD Secondary Math //at grade
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## Triangle Classification

by Christopher King //at grade
This concept teaches students how to classify triangles based on their angles and sides.
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## Triangle Classification

by MCPS Math //at grade
Classify triangles by side lengths and angle measures
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## Triangle Classification

by CK-12 //at grade
Discover how to classify triangles.
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• PLIX

## Triangle Classification: Types of Triangles on a Geoboard

by CK-12 //at grade
Triangle Classification Interactive
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• PLIX

## Triangle Classification: The Obtuse Triangle

by CK-12 //at grade
Triangle Classification Interactive
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• Video

## Triangle Classification Principles

by CK-12 //at grade
This video gives more detail about the mathematical principles presented in Triangle Classification.
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• Video

## Triangle Classification Examples

by CK-12 //at grade
This video shows how to work step-by-step through one or more of the examples in Triangle Classification.
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• 1
• Critical Thinking

## Triangle Classification Discussion Questions

by CK-12 //at grade
A list of student-submitted discussion questions for Triangle Classification.
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• Real World Application

## Bridges Over Troubled Water

by CK-12 //at grade
Find out how you can build bridges from triangles.
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• Real World Application

## Triangle Classification

by CK-12 //at grade
How many triangles can you identify in the world around you?
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• Real World Application

## Flags Flying High

by CK-12 //at grade
Learn about the only national flag that is not in the shape of a quadrilateral.
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• Study Guide

## Polygons Study Guide

by CK-12 //at grade
This study guide focuses on polygons: convex vs concave, interior and exterior angles, and basic terminology for common polygons.
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