Parallel Line Theorems

Lines a, b, and c have these features: a || b with transversal c. Congruent Angle Theorems: Vertical Angles, Corresponding Angles, Alternate Interior Angles, Alternate Exterior Angle Supplemental Angle Theorems: Interior Angles on Same Side, Exterior Angles on Same Side Linear Pair Theorems (form straight line): Adjacent Angles at a point Move one slider at a time, make observations Congruent Angles should be equal in size. The Supplemental Angles/Linear Pairs should add to be 180°.