## flashcard

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polygon

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a closed figure formed by joining straight segments

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## terms list

polygon

a closed figure formed by joining straight segments

triangle

3 sided polygon

quadrilateral

4 sided polygon

pentagon

5 sided polygon

hexagon

6 sided polygon

heptagon

7 sided polygon

octagon

8 sided polygon

nonagon

9 sided polygon

decagon

10 sided polygon

regular polygon

a polygon with all sides and angles congruent is considered...

diagonal

a segment that connects nonconsecutive vertices - formula n(n-3) / 2

convex of polygon

diagonals of polygon lie within the interior of the polygon, outward

concave of polygon

A polygon in which at least one vertex appear to be pushed inward.

sides

are straight line segments

vertex

the point at which two sides of a polygon intersect

interior angle measure sum

n-sided polygon (n-2)180 degrees

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