Ch 1 Geometry

Front

Point

Back

Indicates location, it has no size and no dimension.

Front

Line

Back

A set of continuous points that extends endlessly in opposite directions, one dimension.

Front

Plane

Back

A flat surface with no thickness and extends indefinitely in all directions, 2 dimensions.

Front

Line Segment

Back

Part of a line consisting of two points.

Front

Ray

Back

Line segment that continues indefinitely in only one direction.

Front

Opposite Rays

Back

Rays that have the same endpoint and lie on the same line, but extend in opposite directions.

Front

Collinear Points

Back

Points that lie on the same line.

Front

Coplanar Points

Back

Points that lie on the same plane.

Front

Endpoints

Back

Points on the ends of line segments.

Front

Intersection

Back

When two or more lines or planes have one or more points in common.