Kindergarten Grade Common Core: G.CO.9

Common Core Identifier: G.CO.9 / Grade: K

Curriculum: Congruence: Prove Geometric Theorems

Detail: 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.