# Unit 7: Angles, triangles, and prisms

## Lesson 1: Relationships of angles

Practice
Name anglesGet 3 of 4 questions to level up!

Practice
Complementary and supplementary angles (visual)Get 3 of 4 questions to level up!

Practice
Vertical anglesGet 3 of 4 questions to level up!
Finding missing anglesGet 5 of 7 questions to level up!
Finding angle measures between intersecting linesGet 3 of 4 questions to level up!

## Lesson 5: Using equations to solve for unknown angles

Practice
Create equations to solve for missing anglesGet 5 of 7 questions to level up!
Unknown angle problems (with algebra)Get 5 of 7 questions to level up!

#### Quiz 1

Level up on the above skills and collect up to 900 Mastery points

## Lesson 7: Building polygons (part 2)

Practice
Triangle side length rules Get 3 of 4 questions to level up!

## Lesson 11: Slicing solids

Practice
Cross sections of 3D objects (basic)Get 3 of 4 questions to level up!

## Lesson 15: Distinguishing volume and surface area

Learn
No videos or articles available in this lesson
Practice
Volume and surface area word problemsGet 3 of 4 questions to level up!

#### Quiz 2

Level up on the above skills and collect up to 300 Mastery points
Up next for you:

#### Unit test

Level up on all the skills in this unit and collect up to 1200 Mastery points!