CCSS.Math.Content.HSG.CO.C.9 - Objective

Prove theorems about lines and angles. Theorems include: vertical angles are congruent; when a transversal crosses parallel lines, alternate interior angles are congruent and corresponding angles are congruent; points on a perpendicular bisector of a line segment are exactly those equidistant from the segment's endpoints.

High School Geometry · Common Core State Standards · Common Core 2010