Square
Rectangle
Rhombus
Parallelogram
Kite
Arrowhead
Trapezoid
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There are infinitely many polygons, with 3 or more sides. 3 = triangle 4 = quadrilateral 5 = penatgon 6 = hexagon 7 = heptagon and so on for ever.
Triangle, quadrilateral, Pentagon, hexagon, heptagon, octagon, nonagon, decagon, undecagon, and dodecagon
14.7 for the base and 7 to meet at the top
The sides of the rectangle are 3 times square root of 5 and 5 times square root of 26 The perimeter of the quadrilateral is approximately 64 units
Any shape with 4 right angels is a quadrilateral.