Unit 5 & 6 - Similar Figures & Polygons/Quadrilaterals
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20 Terms
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polygon
A closed figure formed by three or more line segments
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diagonal
a segment that connects any two nonconsecutive vertices
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regular polygon
a polygon with all sides and all angles equal
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pentagon
5 sided polygon
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hexagon
6 sided polygon
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heptagon
7 sided polygon
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octogon
a polygon with 8 sides
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nonagon
9 sided polygon
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decagon
10 sided polygon
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Dodecagon
12 sided polygon
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Parallelogram
a quadrilateral with both pairs of opposite sides parallel
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rectangle
A parallelogram with four right angles
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Rhombus
A parallelogram with four congruent sides
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square
A parallelogram with four congruent sides and four right angles.
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Trapezoid
A quadrilateral with exactly one pair of parallel sides, called the bases
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midsegment of a trapezoid
a segment that connects the midpoints of the legs of a trapezoid
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isosceles trapezoid
a trapezoid in which the legs are congruent
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kite
a quadrilateral with two pairs of adjacent sides congruent and no opposite sides congruent or parallel
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Similar Figures
Figures that have the same shape but not necessarily the same size
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Scale Factor
the ratio of the lengths of two corresponding sides of two similar polygons