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One of the basic undefined terms of geometry. No length, width, or thickness. A dot represents it.
point

begins at a point and goes on forever in one direction
Ray

the union of two distinct rays that have a common end point
Angle

the common end point of an angle
Vertex

One of the basic undefined terms of geometry. Goes on forever in all directions; twodimensional and flat
Plane

One of the basic undefined terms of geometry. A set of points whose length goes on forever in two opposite directions
Line

the part of a line between two points on the line
Line segment

two lines meet at a point. That point is the only point that belongs to both lines
Intersecting lines

all the points 2 figures have in common
Intersection

two lines in a plane that do not intersect
Parallel lines

the points at the end of a line segment
End points

instrument used to draw circles. It has two tipscenter and pencil
Compass

divides a segment or angle into two equal parts
Bisector

two lines that intersect to form four right angles
Perpendicular lines

all points in a plane at a constant distance, called the radius, from a fixed point, called the center
circle

the length of a line segment between the center and circumference of a circle
Radius

equally distant from any two or more points
Equidistant

a continuous portion of a circle
Arc

having the same size, shape and measure
congruent

