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Unit: Similarity

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Possible mastery points

Definitions of similarity

Learn
Getting ready for similarity
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Similar shapes & transformations
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Rational equations intro
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Practice
Similarity & transformationsGet 3 of 4 questions to level up!
Rational equations introGet 3 of 4 questions to level up!

Introduction to triangle similarity

Learn
Intro to triangle similarity
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Triangle similarity postulates/criteria
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Angle-angle triangle similarity criterion
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Determining similar triangles
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Triangle similarity review
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Practice
Determine similar triangles: AnglesGet 3 of 4 questions to level up!
Determine similar triangles: SSSGet 3 of 4 questions to level up!
Prove triangle similarityGet 3 of 4 questions to level up!

Quiz 1

Level up on the above skills and collect up to 500 Mastery points

Solving similar triangles

Learn
Solving similar triangles
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Solving similar triangles: same side plays different roles
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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

Learn
Intro to angle bisector theorem
(Opens a modal)
Using the angle bisector theorem
(Opens a modal)
Practice
Solve triangles: angle bisector theoremGet 3 of 4 questions to level up!

Quiz 2

Level up on the above skills and collect up to 300 Mastery points

Solving problems with similar & congruent triangles

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

Proving relationships using similarity

Learn
Pythagorean theorem proof using similarity
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Exploring medial triangles
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Proof: Parallel lines divide triangle sides proportionally
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Proving slope is constant using similarity
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Proof: parallel lines have the same slope
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Proof: perpendicular lines have opposite reciprocal slopes
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Practice
Prove theorems using similarityGet 3 of 4 questions to level up!

Solving modeling problems with similar & congruent triangles

Learn
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 3

Level up on the above skills and collect up to 200 Mastery points
Up next for you:

Unit test

Level up on all the skills in this unit and collect up to 1000 Mastery points!

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.