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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.
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.
A 30 sided polygon
30 degrees
A 30 sided polygon contains 28 triangles.
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
If each exterior angle is 30 degrees the polygon has 360/30 = 12 sides.
360/30 = 12 sides
It will have 360/30 = 12 sides
It has 360/30 = 12 sides
A regular polygon with exterior angles of 30 degrees has: 360/30 = 12 sides