Lines
Angles
Other
100

A line with one definitive end point and one that extends infinitively. 

What is a RAY

100

An angle of 90 degrees.

What is A RIGHT ANGLE. 

100

A location with no length, width, or depth. 

What is A POINT. 

200

A line with too definitive endpoints, marked by points.

What is a LINE SEGMENT. 
200
An angle that is higher than 90 degrees

What is AN OBTUSE ANGLE.

200

A flat, 2-dimensional surface that extends with no end. It must include 3 or more points. 

What is A PLANE. 

300

Two line segements that do not intersect in any way.

What are PARALLEL LINES. 

300

An angle that is lower than 90 degrees.

What is AN ACUTE ANGLE.

300

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. 

400

Two line segments that intersect to form a 90 degree angle.

What are PERPENDICULAR LINES. 

400

Where two lines meet to form an angle.

What is AN INTERSECTION.

400

Two points that fall on the same line.

What is COLLINEAR.
500

Two lines that do not intersect, and are not parallel. They do not interact.

What are SKEW LINES.

500

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. 

500

Two points that fall on the same plane.

What is COPLANAR.
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