Unit 1 Vocab: Basic Geometry

Front

POINT

Back

A point is a location with no size or shape.

Front

LINE

Back

A line is made up of points with no thickness or width.

Front

LINE SEGMENT

Back

A measurable part of a line consisting of two endpoints.

Front

RAY

Back

A line that extends indefinitely in one direction.

Front

PLANE

Back

A plane is a flat surface made up of points and extends indefinitely in all directions.

Front

COLLINEAR

Back

Points that lie on the same line.

Front

COPLANAR

Back

Points that lie on the same plane.

Front

CONGRUENT SEGMENTS

Back

If two segments have the same length, then they are congruent.

Front

ANGLE

Back

The intersection of two rays at an endpoint.

Front

VERTEX

Back

The common endpoint of an angle (where the sides intersect).