-27
Polygons:
1 side: (not a polygon)
2 sides: (not a polygon)
3 sides: triangle
4 sides: quadrilateral
5 sides: pentagon
6 sides: hexagon
7 sides: heptagon
8 sides: octagon
9 sides: nonagon
10 sides: decagon
11 sides: hendecagon
12 sides: dodecagon
13 sides: tridecagon
14 sides: tetradecagon
15 sides: pentadecagon
16 sides: hexadecagon
17 sides: heptadecagon
18 sides: octadecagon
19 sides: enneadecagon
20 sides: icosagon
21 sides: icosikaihenagon
22 sides: dikaihenagon
23 sides: trikaihenagon
24 sides: tetrakaihenagon
25 sides: pentakaihenagon
26 sides: hexakaihenagon
27 sides: heptakaihenagon
28 sides: octakaihenagon
29 sides: enneakaihenagon
30 sides: triacontagon
Polyhedra (3-d shapes)
1 face:(not a polyhedron)
2 faces:(not a polyhedron)
3 faces:(not a polyhedron)
4 faces: tetrahedron
5 faces: pentahedron
6 faces: hexahedron
7 faces: heptahedron
8 faces: octahedron
9 faces: nonahedron or enneahedron
10 faces: decahedron
11 faces: undecahedron
12 faces: dodecahedron
13 faces: triskaidecahedron
14 faces: tetrakaidecahedron
15 faces: pentakaidecahedron
16 faces: hexakaidecahedron
17 faces: heptakaidecahedron
18 faces: octakaidecahedron
19 faces: enneakaidecahedron
20 faces: icosahedron
21 faces: icosamonohedron
22 faces: icosadihedron
23 faces: icosatrihedron?
24 faces: icosatetrahedron
25 faces: icospentahedron?
26 faces: icosahexahedron
27 faces: icosaheptahedron
28 faces: icosaoctahedron?
29 faces: icosaenneahedron?
30 faces: tricontahedron
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
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 contains 28 triangles.
If each exterior angle is 30 degrees the polygon has 360/30 = 12 sides.
It has 360/30 = 12 sides
360/30 = 12 sides
It will have 360/30 = 12 sides
A regular polygon with exterior angles of 30 degrees has: 360/30 = 12 sides