Building Blocks of Geometry

Math

Terms

Terms Terms

Colinear

Lying in one line (usually refers to a set of points).
Congruent

Of exactly the same size and shape; in other words, of exactly the same dimensions.
Coplanar

Existing in one plane (usually refers to points or lines).
Dimension

The number of lines required to span a region in space.
Line

A collection of points arrayed in a straight formation without limit.
Noncolinear

Not lying in one line (usually refers to a set of points).
Noncoplanar

Not existing in one plane (usually refers to points or lines).
Perpendicular

At a 90 degree angle (something is perpendicular relative to something else).
Plane

A flat, boundless surface in space.
Point

A specific location in space.
Ray

A portion of a line with a fixed endpoint on one end that extends without bound in the other direction.
Segment

A portion of a line with two endpoints and, thus, finite length.
Space

The collection of all points.