Basic Geometry
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Created by:
Sbarton4gr on September 24, 2010
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20 terms
Terms | Definitions |
|---|---|
 Octogon | polygon with 8 sides |
| rhombus | polygon with four sides, two sets of parallel line, no right angles, all equal sides |
| right angle | an angle that measures 90 degrees |
| trapezoid | quadrilateral with exactly one pair of oposite parellel sides |
| hexagon | a polygon with six sides |
| square | a quadrilaterial with four right angles, and all sides equal |
| acute | an angle that measures less than 90 degrees |
| obtuse | an angle that measures more than 90 degrees |
| equilateral triangle | a triangle with all three sides equal and all three angles equal |
| parallel line | lines that will never cross |
| perpendicular lines | lines that cross at 90 degree angles |
| pentagon | a polygon with five sides |
| convex polygon | a polygon that only has angles that bulges outward |
| concave | a polygon that has at least one angle that points inside the shape |
| concentric | a series of the same shape, but of different sizes which have a common center |
| congruent | Having the same size and shape |
| quadrilateral | a four-sided polygon |
| regular polygon | a polygon with all sides and all angles equal |
| polygon | a closed figure formed by three or more line segments |
| line segment | part of a line with two endpoints |
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