An angle whose measure is between 0 and 90 degrees
An angle whose measure is between 90 and 180 degrees
Lines that lay in the same plane but do not intersect
A part of a line, with one endpoint, that continues without end in one direction
2 angles whose sum is 180 degrees
Figures in the same plane
A series of points that extend in a 2 opposite directions without an end
An angle whose measure is 180 degrees
An angle whose measure is 90 degrees
Points that lie on the same line
2 angles whose sum is 90 degrees
A flat surface that has no thickness; Contains many lines and extends without and end in the directions of it's lines
Part of a line consisting of 2 points, called endpoints, and all the points between them
Lines that intersect to form right angles
2 coplaner angles that have a common vertex, but do not share common interior points
Angles that have the same measure
A line that intersects 2 parallel lines
two collinear rays with the same endpoint. They always form a line.
noncoplaner lines; therefore, they are not parallel and do not intersect.
planes that do not intersect
a place in a segment that divides the segment into 2 congruent or equal segments
formed by 2 rays with the same endpoint.
Two angles who's sides are opposite rays