Concave - when a polygon looks caved in
Convex- when a polygon looks like parts are sticking out
Diagonal - a line across the polygon
Kite - a polygon in the shape of a kite
Isosceles trapazoid - Has two congruent legs
Parallelogram - four sides
triangle - 3 sides - 1 triangle - 180 degrees of interior angle
quadrilateral - 4 sides - 2 triangles - 360 degress of interior angle
pentagon - 5 sides - 3 triangles - 540 degress of interior angle
hexagon - 6 sides - 4 triangles - 720 degrees of interior angle
n-gon - n sides - n-2 triangles - (n-20)180 degress of interior angle
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