Basics
A locations with no size or shape.
Point
Points that lie on the same line
Collinear
A segment, line, or plane that intersects a segment at its midpoint
Segment Bisector
The intersection of two rays at a common endpoint
Angle
An angle that measures 180 degrees
Straight Angle
These are made up of points with no thickness
Line
Points that lie on the same plane
Coplanar
Perpendicular
The common endpoint of an angle
Vertex
Two angles that have the same degree measurement
Congruent Angles
A measurable part of a line consisting of two endpoints.
Line Segment
If two segments have the same length, then they are.......
Congruent Segments
A line, segment, or ray perpendicular to a segment at its midpoint.
Perpendicular Bisector
Right Angle
Two angles that share a common side and vertex. "Next to each other"
Adjacent Angles
A line that extends indefinitely in one direction
Ray
If A, B, and C are collinear points and B is between A and C, Then AB + BC = AC
Segment Addition Postulate
The Formula used to find the half way point between two points on a coordinate plane
Midpoint Formula
Angle with a degree measuring less than 90
Acute Angle
If < ABD and <DBC are adjacent, then <ABC +<DBC=<ABC
Angle Addition Postulate
Plane
The formula used to find the space in between two points on a coordinate plane
Distance Formula
Two lines that never intersect
Parallel Lines
An angle that measures more than 90 degrees
Obtuse Angle
A line or ray that divides and angle into two EQUAL parts
Angle Bisector