A line with one definitive end point and one that extends infinitively.
What is a RAY
An angle of 90 degrees.
What is A RIGHT ANGLE.
A location with no length, width, or depth.
What is A POINT.
A line with too definitive endpoints, marked by points.
What is AN OBTUSE ANGLE.
A flat, 2-dimensional surface that extends with no end. It must include 3 or more points.
What is A PLANE.
Two line segements that do not intersect in any way.
What are PARALLEL LINES.
An angle that is lower than 90 degrees.
What is AN ACUTE ANGLE.
The point that signifies the stop of how far each side of a line segment reaches, or how far one side of a ray reaches.
What is AN ENDPOINT.
Two line segments that intersect to form a 90 degree angle.
What are PERPENDICULAR LINES.
Where two lines meet to form an angle.
What is AN INTERSECTION.
Two points that fall on the same line.
Two lines that do not intersect, and are not parallel. They do not interact.
What are SKEW LINES.
Two angles, lines, planes, or other geometric things that are identical in some way.
(Yes I'm aware this isn't just about angles; I had no where else to fit it.)
What is CONGRUENT.
Two points that fall on the same plane.