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A graph used to organize and display data so that the frequencies can be compared.
Stem and leaf plot

A bar graph that shows the frequencies of data within equal intervals
Histogram

A part of a line that starts at an endpoint and extends forever in one direction.
Ray

A figure formed by 2 rays with a common endpoint or vertex.
Angle

An exact location that has no size.
Point

Less than 90 degrees.
Acute angle

Straight path, no thickness, extends forever.
Line

Two angles whose measures equal 90 degrees.
Complimentary angles

Two angles whose measures equal 180 degrees.
Supplementary angles

Having the same size and shape.
Congruent

The set of all points in a plane which are the same distance from the center.
Circle

A line segment with end points on a circle.
Chord

A line segment with one end point at the center of a circle and the other on the circle.
Radius

The point inside a circle the same distance from all the points on the circle.
Center of circle

A line segment that goes through the center of the circle and has both end points on the circle.
Diameter

A part of a circle named for its end points.
Arc

A pair of opposite congruent angles formed by intersecting lines.
Vertical angle

An angle that measures 180 degrees.
Straight angle

An angle that measures less than 90 degrees.
Acute angle

An angle that measures 90 degrees.
Right angle

