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High School
Geometry
Domain
Congruence
Cluster
Experiment with transformations in the plane
Standard
Know precise definitions of angle, circle, perpendicular line, parallel line, and line segment, based on the undefined notions of point, line, distance along a line, and distance around a circular arc.
G-CO.A.1. Know precise definitions of angle, circle, perpendicular line, parallel line, and line segment, based on the undefined notions of point, line, distance along a line, and distance around a circular arc.
Defining Parallel Lines
Defining Perpendicular Lines
