Geometry Unit 1

Front

Point

Back

A position in space with no dimension. It is named with a capital letter.

Front

Line

Back

Infinite number of points which extend in opposite directions (1 dimension).

Front

Ray

Back

An endpoint on a line and all the points on one side of the endpoint.

Front

Segment

Back

Finite number of points on a line contained between two endpoints.

Front

Collinear

Back

When three or more points lie on the same line.

Front

Bisect

Back

Cut into two equal parts (angles or lines).

Front

Plane

Back

A flat, two-dimensional surface that extends up to infinity.

Front

Midpoint

Back

A point on a segment that splits the segment into two congruent segments.

Front

Segment Addition

Back

The sum of two parts of a segment equals the whole segment.

Front

Angle

Back

Two rays that connect at a common endpoint called the vertex.