Line
An infinite number of points extending an opposite direction that has only one dimension
Line segment
Part of a line that has two end points
Ray
Part of a line that has one end point and continues in One Direction infinitely
Point
A location has no dimension
Vertex
The common endpoint of two segments or rays that form the corner if an angle
Which of the correct label for the angle
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Plane
If flat surface that extends infinitely and has no depth; it has a length and width
Perpendicular lines
Two lines intersect at 90� angle
Parallel lines
Two lines that lie within the same plane and never intersected
Circle
The set of all points in a plane that are given distance from a point
Angle
If figured consisting of two rays with in common endpoint
Undefined
Point, line, and plane
Defined
Angle, circle, perpendicular line, parallel line, and line segment
Postulates
Known as a fact