In this chapter, you will learn how to:

**Chapter 9: Angles and the Pythagorean Theorem**In this chapter, you will learn how to:

- Find the measurements of missing angles made by a line that intersects parallel lines.
- Find unknown angles inside and outside of triangles
- Determine if two triangles are similar by looking at their angles
- Find missing side lengths of right triangles using the Pythagorean Theorem
- Find the square root of a number and identify irrational numbers
- Convert terminating and repeating decimals to fractions.