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Polygons
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Terms in this set (19)
Polygon
A closed shape formed by line segments
Regular Polygon
A polygon whose line segments are all the same length
Right Triangle
A three-sided polygon with one right angle and two acute angles.
Pentagon
A five-sided polygon
Hexagon
A six-sided polygon
Heptagon
A seven-sided polygon
Octagon
An eight-sided polygon
Nonagon
A nine-sided polygon
Decagon
A ten-sided polygon
Trapezoid
A quadrilateral that has two sides parallel each other
Parallelogram
A quadrilateral that has both pairs of opposite sides parallel to each other
Rhombus
A parallellogram with all four sides of equal length
Rectangle
A parallellogram with all four sides forming right angles
Square
A rhombus with all four sides meeting to form right angles
obtuse angle
An angle greater than 90 degrees
acute angle
An angle less than 90 degrees
right angle
A 90 degree angle
vertex
A corner of a polygon
Quadrilateral
A four-sided polygon
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