Essential Question(s):
1. How can informal arguments be used to prove congruence in angle relationships?
2. What can you conclude about the measures of the angles of a triangle?
3. How can you determine when two triangles are similar?



  • Congruence
  • Same Side Interior Angles
  • Parallel Lines
  • Same Side Exterior Angles
  • Transversal
  • Corresponding Angles
  • Exterior / Interior Angles
  • Remote Interior Angles
  • Alternate Interior Angles
  • Similar Triangles
  • Alternate Exterior Angles