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# Triangle Proportionality

## Sides divided by a line parallel to the third side of a triangle.

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 Proportionality

by CK-12 //basic
Use the Triangle Proportionality Theorem and its converse.
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• Video

## Triangle Proportionality Principles - Basic

by CK-12 //basic
This video provides the student with a walkthrough on triangle proportionality.
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• Video

## Triangle Proportionality Examples - Basic

by CK-12 //basic
This video provides the student with a walkthrough of one or more examples from the concept "Triangle Proportionality".
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• Video

## The Triangle Proportionality Theorem

by CK-12 //basic
States and proves the triangle proportionality theorem.
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• Video

## Using the Properties of the Triangle Proportionality Theorem to Solve for Unknown Values

by CK-12 //basic
Shows how to use the properties of the triangle proportionality theorem to solve for unknown values.
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• Flashcards

## Triangle Proportionality Flashcards

by CK-12 //basic
These flashcards help you study important terms and vocabulary from Triangle Proportionality.
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