Module Overview
Triangle Relationships

wooden triangular blocks Get prepared to investigate the many relationships that exist between the sides and angles of a triangle. Do the measures of the angles of a triangle have any effect on the side lengths of a triangle? Will any three segment lengths form a triangle? If you knew only the angle measures of a triangle, what could you determine about the side lengths? In this module, you will determine the answers to these questions and many more.

Getting Started

student writing in a notebook Getting started iconWrite down everything you already know about triangles. How do you classify a triangle by its side lengths? How do you classify a triangle by its angle measures? What is the sum of the interior angle measures of a triangle? What else do you already know about triangles? Brainstorm and make a list of the things you know about triangles.

Key Vocabulary

Glossary iconTo view the definitions for these key vocabulary terms, visit the course glossary.

triangle inequality