Triangle's Interior Angles

This Triangle's Interior Angles lesson plan also includes:

Given a pair of parallel lines and a triangle in between, geometers prove that the sum of the interior angles is 180 degrees. This quick quest can be used as a pop quiz or exit ticket for your geometry class.

219 Views 156 Downloads
CCSS: Designed
  • Meets Common Core State Standards for eighth grade geometry
  • Detailed teacher commentary explains the solution 
  • None
Common Core