GSE Geometry Unit 1: Transformations in the Coordinate Plane Vocabulary Quiz 1 Vocabulary

Angle : A figure created by two distinct rays that share a common endpoint (also known as a vertex). ∠ABC or ∠B or ∠CBA indicate the same angle with vertex B.

Bisector : A point, line or line segment that divides a segment or angle into two equal parts.

Line segment : A part of a line between two points on the line. AB (with — over it) indicates the line segment between points A and B.

Parallel lines : Two lines are parallel if they lie in the same plane and do not intersect. AB||CD indicates that line AB is parallel to line CD.

Plane : a flat surface that extends without end and has no thickness. A plane contains infinitely many points