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A shape with 30 sides may be called a triacontagon. But unless you want to be pretentious or obfuscate or to irritate your audience, I suggest you call it a 30-gon or 30-sided polygon.
A polygon having 30 degree exterior angles is a dodecagon having 12 sides.
Using traditional shape affixes for 1000, 200, 30, and 4-sided shapes, a 1234-sided polygon might be called a Chiliadihectatriacontatetragon - chilia- referring to one-thousand, di- referring to two, hecta- referring to hundred, triaconta- referring to 30, and tetra- referring to 4. However, in practical use, it is less confusing and more universal to use the term 1234-gon.
it has 19 sides (:
A regular polygon has equal angles and sides. Therefore, consider 0 degrees as a starting direction. At every corner, you turn 30 degrees to the left, until you end up back where you started. A full rotation is 360 degrees. Divide by 30, and you have turned 12 times. The polygon, therefore, has 12 sides.
The names of polygons with sides ranging from 21 to 30 are as follows: a 21-sided polygon is called a icosagon, a 22-sided polygon is a dicosagon, a 23-sided polygon is a tricosagon, a 24-sided polygon is a tetracosagon, a 25-sided polygon is a pentacosagon, a 26-sided polygon is a hexacosagon, a 27-sided polygon is a heptacosagon, a 28-sided polygon is an octacosagon, a 29-sided polygon is a nonacosagon, and a 30-sided polygon is a triacontagon.
A shape with 30 sides may be called a triacontagon. But unless you want to be pretentious or obfuscate or to irritate your audience, I suggest you call it a 30-gon or 30-sided polygon.
180x(30-2) all divided by 30=168
A 30-sided polygon is called a triacontagon.
30 degrees
Who knows? Well, maybe me.... I think it might be a decicosagon, because I figure that all polygons from 21-30 end in icosagon, and because all the 13-20 begin with the 3-9 sided shape names.. (apart from 19, with is the enneadecagon of course) the answer will be... A. Decicosagon
A 30 sided polygon
A 30 sided polygon contains 28 triangles.
If each exterior angle is 30 degrees the polygon has 360/30 = 12 sides.
360/30 = 12 sides
It has 360/30 = 12 sides
It will have 360/30 = 12 sides