# Similarity

## Definitions of similarity

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Similar shapes & transformations
Practice
Similarity & transformationsGet 3 of 4 questions to level up!

## Introduction to triangle similarity

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Intro to triangle similarityTriangle similarity postulates/criteriaDetermining similar trianglesProving slope is constant using similarityTriangle similarity review
Practice
Determine similar triangles: AAGet 3 of 4 questions to level up!
Determine similar triangles: SSSGet 3 of 4 questions to level up!

## Solving similar triangles

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Solving similar trianglesSolving similar triangles: same side plays different roles
Practice
Solve similar triangles (basic)Get 3 of 4 questions to level up!
Solve similar triangles (advanced)Get 3 of 4 questions to level up!

## Angle bisector theorem

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Intro to angle bisector theoremUsing the angle bisector theorem
Practice
Solve triangles: angle bisector theoremGet 3 of 4 questions to level up!

## Solving problems with similar & congruent triangles

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Using similar & congruent trianglesChallenging similarity problem
Practice
Use similar & congruent trianglesGet 3 of 4 questions to level up!

## Solving modeling problems with similar & congruent triangles

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Geometry word problem: the golden ratioGeometry word problem: Earth & Moon radiiGeometry word problem: a perfect pool shot