Get Free Access for 10 Days!
Instructional Video

What is the Triangle Sum Theorem?

Curated and Reviewed by Lesson Planet

If you add the value of the three interior angles in a triangle will it equal 180 degrees? Yes it will. The instructor illustrates and proves the Triangle Sum Theorem. Follow closely as she explains her proof.

23 Views 21 Downloads
Concepts
addition, alternate interior angles, straight angles, congruence, interior angles, parallel lines, transversals, triangle sum theorem, triangle properties
Show More Show Less
Additional Tags
add, alternate interior angles, congruent, interior angles, parallel lines, transversals, 180 degrees, straight angles, sum of angles, triangle sum theorem, math
Show More Show Less
Resource Details
Grade
6th - 9th
Subjects
Math
1 more...
Resource Type
Instructional Videos
Media Length
4:48
Audience
For Teacher Use
Instructional Strategy
Flipped Classroom
Usage Permissions
Fine Print