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Similarity

Definitions of similarity

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Similar shapes & transformations
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Similarity & transformationsGet 3 of 4 questions to level up!
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Introduction to triangle similarity

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Intro to triangle similarity
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Triangle similarity postulates/criteria
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Determining similar triangles
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Proving slope is constant using similarity
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Triangle similarity review
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Practice
Determine similar triangles: AAGet 3 of 4 questions to level up!
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Determine similar triangles: SSSGet 3 of 4 questions to level up!
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Quiz 1

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Solving similar triangles

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

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Intro to angle bisector theorem
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Using the angle bisector theorem
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Solve triangles: angle bisector theoremGet 3 of 4 questions to level up!
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Solving problems with similar & congruent triangles

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Using similar & congruent triangles
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Challenging similarity problem
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Use similar & congruent trianglesGet 3 of 4 questions to level up!
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Solving modeling problems with similar & congruent triangles

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Geometry word problem: the golden ratio
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Geometry word problem: Earth & Moon radii
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Geometry word problem: a perfect pool shot
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Quiz 2

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Unit test

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About this unit

Learn what it means for two figures to be similar, and how to determine whether two figures are similar or not. Use this concept to prove geometric theorems and solve some problems with polygons.