### Home > CCAA > Chapter 9 Unit 10 > Lesson CC3: 9.1.4 > Problem 9-49

9-49.

Use what you know about the angles in a triangle to find in each diagram below. Show all work. Then classify each triangle as acute, right, or obtuse. Homework Help ✎

By the Angle Sum Theorem, the sum of all interior angles of a triangle is always