If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

To log in and use all the features of Khan Academy, please enable JavaScript in your browser.

Main content

Unit: Similarity

0

Possible mastery points

Definitions of similarity

Learn

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

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 400 Mastery points

Solving similar triangles

Learn

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

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 240 Mastery points

Solving problems with similar & congruent triangles

Learn

Practice

Use similar trianglesGet 3 of 4 questions to level up!

Proving relationships using similarity

Learn

Practice

Prove theorems using similarityGet 3 of 4 questions to level up!

Solving modeling problems with similar & congruent triangles

Learn

Quiz 3

Level up on the above skills and collect up to 160 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.