# Eighth grade math lessons

Brush up on important topics with IXLâ€™s eighth grade math lessons! Once you're ready, start practicing what you've learned in one of IXL's skills.

#### Integers

#### Rational and irrational numbers

#### Exponents, scientific notation, and roots

#### Proportional relationships

#### Percents

#### Two-dimensional figures

- Parts of a circle
- Area of circles
- Circumference of circles
- Complementary angles
- Supplementary angles
- Adjacent angles
- Vertical angles
- Transversals of parallel lines
- Interior angles of triangles
- Exterior angles of triangles
- The Pythagorean theorem
- The converse of the Pythagorean theorem
- Distance formula