This concept teaches students the Triangle Sum Theorem, and how to use it.
Learn to understand the angle measures of triangles.
This video gives more detail about the mathematical principles presented in Triangle Sum Theorem.
This video shows how to work step-by-step through one or more of the examples in Triangle Sum Theorem.
Ten question quiz. Students must solve for missing angles in triangles using the triangle sum theorem and basic arithmetic and their algebra skills.
A list of student-submitted discussion questions for Triangle Sum Theorem.
Do the angles in a triangle always add up to 180 degrees? How are the lengths of the sides of a triangle controlled by the sizes of the angles in Spherical Geometry?
This study guide reviews terminology for triangles, different types of triangles, and interior and exterior angles theorems.