Chapter 1 geometry vocab
Terms in this set (27)
a segment, ray, line, or plane that intersects a segment at its midpoint
Extends forever in 2 directions. Names by 2 capitol letters or 1 lower case.
The simplest figure studied in geometry. Usually named by caption letters.
Extends forever without ending and has no thickness (2D)
the set of all points
points on the same line
points on the same plane
Point at which a line segment or a rat ends
A part of a line, with one endpoint, that continues without end in one direction
two rays that have a common endpoint and form a line
the point at which two lines or roads meet and cut across each other
double the midpoint and subtract the endpoint
point slope form
Angle Addition Postulate
If P is in the interior of <RST, then m<RSP + m<PST = m<RST
a universal truth; an established rule
Two angles whose sum is 180 degrees
Two angles whose sum is 90 degrees
A pair of adjacent angles whose noncommon sides are opposite rays.
a statement that is accepted as true without proof
an angle that measures 180 degrees
an angle that measures 90 degrees
A pair of opposite congruent angles formed by intersecting lines
A point where two or more straight lines meet.
the point halfway between the endpoints
point, line, plane
part of a line with two endpoints
segments that have the same length