The Language of Proof and Logic · Geometry & Logic

Parallel Lines and Transversals

Investigating the unique angle relationships formed when parallel lines are intersected by a transversal.

Key Questions

  1. 1How can we prove two lines are parallel without seeing where they terminate?
  2. 2What is the relationship between the Parallel Postulate and the sum of angles in a triangle?
  3. 3Why are certain angle pairs congruent while others are supplementary?

Common Core State Standards

CCSS.Math.Content.HSG.CO.C.9
Grade: 10th Grade
Subject: Mathematics
Unit: The Language of Proof and Logic
Period: Geometry & Logic

Suggested Methodologies

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