Lying in one line (usually refers to a set of points).
Of exactly the same size and shape; in other words, of exactly the same dimensions.
Existing in one plane (usually refers to points or lines).
The number of lines required to span a region in space.
A collection of points arrayed in a straight formation without limit.
Not lying in one line (usually refers to a set of points).
Not existing in one plane (usually refers to points or lines).
At a 90 degree angle (something is perpendicular relative to something else).
A flat, boundless surface in space.
A specific location in space.
A portion of a line with a fixed endpoint on one end that extends without bound in the other direction.
A portion of a line with two endpoints and, thus, finite length.
The collection of all points.