Foundational Geometry Vocab

Front

An exact location in space with no size or dimension.

Back

Point

Front

A straight one-dimensional figure extending infinitely in both directions.

Back

Line

Front

A part of a line bounded by two distinct endpoints.

Back

Line Segment

Front

A part of a line that starts at one point and extends infinitely in one direction.

Back

Ray

Front

A flat, two-dimensional surface that extends infinitely in all directions.

Back

Plane

Front

Formed by two rays (or line segments) sharing a common endpoint, called the vertex.

Back

Angle

Front

A set of all points in a plane that are equidistant from a fixed point, known as the center.

Back

Circle

Front

The length between two points.

Back

Distance

Front

The point that divides a segment into two equal parts.

Back

Midpoint