points on the same line
congruent line segment
Line segments that have the same length
a location in space that has no size
a set of points that form a stright path extending in oppsite directions without end
figure formed by two rays with the same initial point
the pure mathematics of points and lines and curves and surfaces
are points that do not lie on the same line
points all in one plane
the act of intersecting (as joining by causing your path to intersect your target's path), a place where two or more points meet
midpoint of a segment
The point that divides a segment into two congruent segments.
points on the ends of line segments
two dimensional flat surface, extends forever.
contains at least 4 points not in one line
an angle between 90 and 180 degrees
an angle of 180 degrees
formed by rays
two rays with the same initial point that go in opposite directions
the point of intersection of lines or the point opposite the base of a figure
bisector of a segment
a line, segment, ray, or plane that intersects the segment at its midpoint
an angle less than 90 degrees but more than 0 degrees
Angles that have the same measure
the 90 degree angle between two perpendicular lines
angles are formed opposite of each other when two lines intersect
bisector of an angle
the ray that divides the angle into two congruent adjacent angles
two lines that meet and form a right angle
points that are not in the same plane
a part of a line with two endpoints
Two angles with a common side, a common vertex, and no common points within the angles
Two angles that add to 180º are called
if the sum of two angles is 90%
unit based to measure angles ( symbol )
Part of a line that has one endpoint and extends indefinitely in one direction.
A line that is perpendicular to a segment at its midpoint.
two angles in corresponding positions relative to two lines cut by a transversal
alternate exterior angles
Two nonadjacent exterior angles on opposite of the transversal.
same side-interior angles
interior angles on the same side of a transversal
The angle on the outside of a transversal.
noncoplanar lines that do not intersect
planes that don't intersect
is a line that intersects each of two other coplanar lines in different points
the angle inside of a transversal
alternate interior angles
two nonadjacent interior angles on opposite of the transversal