# 8.8: Study Guide

**At Grade**Created by: CK-12

Keywords: Define, write theorems, and/or draw a diagram for each word below.

**Section: The Pythagorean Theorem**

Pythagorean Theorem

Pythagorean Triple

Distance Formula

**Homework:**

**Section: The Pythagorean Theorem Converse**

Pythagorean Theorem Converse

Theorem 8-3

Theorem 8-4

**Homework:**

**Section: Similar Right Triangles**

Theorem 8-5

Geometric Mean

**Homework:**

**Section: Special Right Triangles**

Isosceles Right (45-45-90) Triangle

30-60-90 Triangle

45-45-90 Theorem

30-60-90 Theorem

**Homework:**

**Section: Tangent, Sine and Cosine Ratios**

Trigonometry

Adjacent (Leg)

Opposite (Leg)

Sine Ratio

Cosine Ratio

Tangent Ratio

Angle of Depression

Angle of Elevation

**Homework:**

**Section: Solving Right Triangles**

Inverse Tangent

Inverse Sine

Inverse Cosine

Solving Right Triangles

**Homework:**