12
The prefix is dodeca- which, in Greek, refers to 12.
Dodecagram dodecagon
A dodecahedron has 20 sides, which are all pentagons. "Dodeca" means "do" (2) times "deca" (10).
A dodecahedron is a 3-dimensional shape with 12 (dodeca-) polygonal faces. There are more than 6 million different types of convex dodecahedra. For example, a hendecagon based (11-sided polygon) pyramid, which has 12 vertices;a decagon based prism, which has 20 vertices;a hexagon based dipyramid which has 8 vertices.Then there is the regular Platonic solid, made out of 12 regular pentagonal faces. This has 20 vertices.
12
The Greek Prefix for 12 is dodeca. For Example O12 would be dodecoxide.
The prefix is dodeca- which, in Greek, refers to 12.
I believe it is "unodeca-" or unadeca-" . 12 is "dodeca-" and 13 is triskadeca-
A "dodeca" is a prefix: it is not a shape. An octahedron has eight faces.
dodecagon dodecahedron
Twelve. Or when describing an object, the prefix "dodeca- " can be used. Examples are dodecahedron, a polygon with 12 sides, or dodecapod - an imaginary animal with 12 legs :-)
12. (deca = 10, octo = 8, hexa = 6 etc)
12. Decca means twelve. A 'Decagon, means a twelve sided shape. Alternatively, if you mean decaNewtons then there are definitely 10 not 12; as the prefix for twelve is dodeca-.
dodecahedron
Dodecagon Dodeca = 12, gon = sides
Dodecagon Dodeca = 12, gon = sides