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Last updated 1:55 PM on 9/9/26
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19 Terms

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Complementary angle

2 angles that addd to 90 degree angle

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Supplementary angle

2 angles that add to 180 degree angle

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Vertical angle

Two angles across from from each other when two lines intersect

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Linear pair of angles

Two adjacent angles that form 180 degrees (to make a line)

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Trapezoid

Quadrilateral with exactly 1 pair of opposite sides parallel

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Kite

A quadrilateral with 2 distinct Paris of adjacent sides congruent

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Parallelogram

Quadrilateral with both pairs of opposite sides in parallel

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Rhombus

A parallelogram with 4 sides congruent

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Polygon

A closed shape

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Quadrilateral

4 sides

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Pentagon

5 sides

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Hexagon

6 sides

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Heptagon

7 sides

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Octagon

8 sides

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Decagon

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Perimeter

The sum of the lengths of the sides

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Equilangulr polygon

All angles have equal measure

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Regular polygon

Both equilateral and equilangular

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