1.
An undefined term in geometry; names a location and has no size.
2.
An undefined term in geometry; a straight path that has no thickness and extends infinitely.
3.
An undefined term in geometry; a flat surface that has no thickness and extends infinitely.
4.
In the same plane.Non CoplanerNot in the same plane.
6.
Collinear Not in the same line.
7.
The point or set of points at which two figures meet.
8.
Segment A line with two distinct endpoints
9.
A point at an end of a segment or the starting point of a ray.
10.
Having the same size and shape.
11.
A statement that is accepted as true without proof.
12.
A statement that has been proven.
13.
A part of a line that starts at an endpoint and extends infinitely in one direction.
14.
A figure formed by two rays with a common endpoint.
15.
The common endpoint of the sides of the angle.
16.
Lines Lines that intersect a 90 degree angle
17.
Lines Lines in the same plane that do not intersect. Skew Lines Lines that are not coplanar.
18.
Angles Two angles whose measures have a sum of 90°.
19.
Angles Two angles whose measures have a sum of 180°.
20.
Angles Two angles in the same plane with a common vertex and a common side
21.
Pair A pair of adjacent angles whose noncommon sides are opposite rays.
22.
Angles The nonadjacent angles formed by two intersecting lines.
23.
To divide into two congruent parts.
24.
The number of non-overlapping unit squares of a given size that will exactly cover the interior of a plane figure.
25.
The sum of the side lengths of a closed plane figure.
