Polygons Name by Sides
3-sides
4-sides
5-sides
6-sides
7-sides
8-sides
9-sides
10-sides
Sides Name
3 Triangle
4 Quadrilateral
5 Pentagon
6 Hexagon
7 Heptagon
8 Octagon
9 Nonagon
10 Decagon
11 Undecagon
or
-Hendecagon
12 Dodecagon
3 Triangle
4 Quadrilateral
5 Pentagon
6 Hexagon
7 Heptagon
8 Octagon
9 Nonagon
10 Decagon
11 Undecagon
or
-Hendecagon
12 Dodecagon
All Subjects
definition of a Regular Polygon: A polygon in which all
angles and sides are equal.
angles and sides are equal.
Polygons Name by Sides
Irregular Polygon? Definition: Any polygon that is
not a regular polygon. A polygon whose sides are
not all the same length or whose interior angles do
not all have the same measure.
not a regular polygon. A polygon whose sides are
not all the same length or whose interior angles do
not all have the same measure.
Irregular Polygon
The figure to the left is pentagon because it has five
sides. But it is irregular because all the sides are not
equal length.
sides. But it is irregular because all the sides are not
equal length.
Square
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Regular polygons Chart
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