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Level 131

Quadrilaterals & Other Polygons


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Parallelogram
quadrilateral with parallel opposite sides
facts about parallelograms
opposite angles are equal
Rhombus
equilateral parallelogram
Rectangle
parallelograms with right angles
Square
all sides are equal
Trapezoid
quadrilateral with one pair of parallel sides
kite
A quadrilateral with two distinct pairs of equal adjacent sides.
(n-2)180
polygons: sum of all interior angles
360
polygons: sum of all exterior angles
(n*(n-3)/2 where n>=3
polygons: number of diagonals is