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JCMSMath Vocabulary

congruent having exactly the same size and shape.
diameter A line segment that passes through the center of a circle and has endpoints on the circleand is twice the radius.
line a set of points that extends without end in two opposite directions.
line segment part of a line with a point at each end.
midpoint a point that is equal distance from the two endpoints of a line segment.
parallel lines, rays, or line segments that are the same distance apart and never meet.
perpendicular lines, rays, or line segments that meet at right angles.
radius A line segment from the center of a circle to any point on the circle and is one half the diameter.
ray A part of a line that has one endpoint and extends without end in one direction.
acute triangle a triangle with all angles measuring less than 90 degrees
adjacent angles Two angles that have a common vertex and one common side.
area The amount of surface inside a closed boundary and is measured in square units.
complementary angles Two angles whose measures have a sum of 90.
horizontal In a left right orientation; parallel to the horizon.
Circle graph a graph that uses sections of a circle to compare parts to a whole and parts to other parts
perimeter The distance around a closed 2-dimensional shape.
supplementary angles Two angles whose measures have a sum of 180.
vertex The point at which two line segments, lines or rays meet to form an angle.
vertical Upright; perpendicular to the horizon.
circumference the distance around a circle
complement all the ways that an event can not happen
coordinates the numbers of an ordered pair that locate a point on a coordinate graph
exponent the number that indicates how many times the base is used as a factor
Created by: Tammy Lynn Tammy Lynn