icosikaidi is the name for a 22 sided polygon. For a list of the names for polygons, see the related link.
A polygon with 16 sides is called a hexadecagon or hexakaidecagon.See related link below..
Triacontagon
ennedagon
it doesnt have a name if it has the name is square
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a twelve sided shape is called a dodecagon.
quadrilaterals
They are 4 sided quadrilaterals
well there are quadrilaterals, the 4 sided polygons. There's parallelogram,trapezoid,isosceles trapizod rhombus,rectangle,square
dodecagon
dodecagon