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# Pace Geometry terms

### Basic geometry terms.

An angle that measures less than 90 degrees and more than 0 degrees Acute
Angles that have a common vertex and a common side. Adjacent
The distance around the outside of the circle. Circumference
A chord that travels through the center of the circle. Diameter
A triangle that has 3 sides of equal length. Equilateral
A seven sided polygon. Heptagon (accept Septagon)
A straight line that goes from left to right across a piece of paper. Horizontal
An 8 sided polygon. Octagon
The mathematical constant used in finding the area of a circle. Pi
Any polygon that has four sides. Quadrilateral
An angle greater than 180 degrees, but less than 360 degrees. Reflex
An angle that measures 180 degrees. Straight
2 angles whose sum is 180 degrees. Supplementary angles
A line that intersects at least 2 other lines. Transversal.
A quadrilateral having 1 pair of parallel sides. Trapezoid.
A quadrilateral that has no parallel sides. Trapezium
The point where 2 sides of an angle meet. Vertex
A straight line that goes up and down. Vertical
A pair of opposite angles formed when 2 straight lines intersect. Vertical angles
The amount of space taken up by a three dimensional object. Volume
Created by: vragsdell