Main content

# Unit 9: Right triangles & trigonometry

900 possible mastery points

Mastered

Proficient

Familiar

Attempted

Not started

Quiz

Unit test

## About this unit

Triangles are not always right (although they are never wrong), but when they are it opens up an exciting world of possibilities. Not only are right triangles cool in their own right (pun intended), they are the basis of very important ideas in analytic geometry (the distance between two points in space) and trigonometry.

### Learn

### Practice

- Pythagorean theorem in 3DGet 3 of 4 questions to level up!
- Pythagorean theorem challengeGet 3 of 4 questions to level up!

### Learn

### Practice

- Special right trianglesGet 3 of 4 questions to level up!

Level up on the above skills and collect up to 240 Mastery points

### Learn

### Practice

- Use ratios in right trianglesGet 3 of 4 questions to level up!

### Practice

- Solve for an angle in right trianglesGet 3 of 4 questions to level up!

Level up on the above skills and collect up to 320 Mastery points

Level up on the above skills and collect up to 160 Mastery points

Up next for you:

Level up on all the skills in this unit and collect up to 900 Mastery points!