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# 30-60-90 Right Triangles

## Hypotenuse equals twice the smallest leg, while the larger leg is sqrt(3) times the smallest.

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.

## 30-60-90 Right Triangles

by CK-12 //basic
Apply the special properties of 30-60-90 right triangles.
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• Video

## 30 60 90 Triangles

by CK-12 //basic
Introduces 30 60 90 triangles with some 45 45 90 triangle practice problems.
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• Video

## 30-60-90 and 45-45-90 Triangles

by CK-12 //basic
This video will help you begin to develop the idea of common reference triangles.
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## Solving Special Right Triangles

by CK-12 //basic
Shows how to use the ratio of 30-60-90 and 45-45-90 right triangles to solve special right triangles.
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• Video

## Special Right Triangle: 30-60-90 Principles - Basic

by CK-12 //basic
This video provides the student with a walkthrough on 30-60-90 triangles.
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## Special Right Triangle: 30-60-90 Examples - Basic

by CK-12 //basic
This video provides the student with a walkthrough of one or more examples from the concept "Special Right Triangle: 30-60-90".
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• Flashcards

## Special Right Triangle: 30-60-90 Flashcards

by CK-12 //basic
These flashcards help you study important terms and vocabulary from 30-60-90 Right Triangles.
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