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plane
An infinite number of points and lines on a flat surface that extends without end, and has no thickness
angle
Formed by two raised with the same endpoint
Line
Infinite number of points on a straight path that extends into opposite directions with no end, and has no thickness
ray
The part of a line that consist of one endpoint and all the points of the line on one side of the endpoint
Point
Is a location and has no size
segement
Part of a line that consists of two points, called endpoints, and all points between them
colinear points
Points that lie on the same line
opposite rays
Rays with the same endpoint that lie on the same line
postulate
Statement that we except without proof