Providing that it is a regular 12 sided polygon then each exterior angle measures 30 degrees
There are: 0.5*(302-(3*30)) = 405 diagonals
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.
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.
28 plausibly. There are an infinite number of possibilities. If we assume all angles are equal, it narrows the field. * * * * * Wrong answer. The interior angles of a 30 sided polygon sum to (30 - 2)*180 = 5040 degrees. And you do not need to assume that the angles are equal. They can even be reflex angles.
The formula used to find the number of diagonals in a polygon is n(n-3)/2. 30 x 27/2 = 810/2 = 405 diagonals.
A 30 sided polygon contains 28 triangles.
A 30-sided polygon is called a triacontagon.
30
30
A 30 sided polygon is called a Triacontagon.
It has 10 sides because using the formula 0.5*(102-30) = 35 diagonals
30 of them
A 30 sided polygon is known as a Triacontagon.
A 30 sided polygon
A triacontagon is a thirty-sided polygon.
30 sides