monogon
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3: Triangle
4: Quadrilateral
5: Pentagon
6: Hexagon
7: Heptagon
8: Octagon
9: Nonagon
10: Decagon
There are names for some polygons with a higher number of sides, but these are rarely used. Typically we use the phrase "n-gon." Thus, a 69-sided polygon would be referred to as a 69-gon.
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The sides of a polygon do not generally have specific names. Polygons with 3 sides are triangles.
The first ten polygons in order of names and sides are as follows:- Triangle has 3 sides Quadrilateral has 4 sides Pentagon has 5 sides Hexagon has 6 sides Heptagon has 7 sides Octagon has 8 sides Nonagon has 9 sides Decagon has 10 sides Undecagon has 11 sides Dodecagon has 12 sides
There are regular polygons (with 3, 4 and 6 sides).There are irregular convex polygons (with 3, 4, 5 or 6 sides). There are [irregular] concave polygons with various numbers of sides.
They both have three(3) or more sides. =)
Regular polygons with 3, 4 or 6 sides.