Lesson: Types of Triangles: Angles and Sides Holt Mathematics • Course 2 • Holt Mathematics • Course 1 • Geometry • Concepts and Skills • Go Math! • Grade 5 • Common Core • JUMPMath 8.1 • Part 1 of 2 • Assessment & Practice • US Edition • Glencoe • Geometry • Common Core • Math Connects • Concepts, Skills, and Problem Solving • Course 1 • Student Edition