2007-11-02 10:39:11 · 9 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
After about 12, mathematicians usually just call them n-gons, as in 21-gons.
But there are names for theses polygons if you really want to know.
For a 21-sided figure there are actually two acceptable names:
icosikaihenagon or icosihenagon
kai literally means 'and' but people debate whether or not the kai is necessary.
You can read more at the following links. Check out the polygon name generator too!
2007-11-02 10:53:32 · answer #1 · answered by Puzzling 7 · 2⤊ 0⤋
I was always taught that there are special names for all two-dimensional figures with three sides up to ten, and then another special name for a twelve sided figure. Also, the same rules apply to three-dimensional figures for the most part. If the shape doesn't have the specified sides, like in this case, then to name it one uses the word for the number in the language of the geographic area one is living. So that means that a 21-sided shape would be a twenty-one-agon. It wouldn't surprise me though if there were multiple correct answers to your question because it's such a rare occurrence to see a twenty-one-sided-shape.
2007-11-02 10:52:13 · answer #2 · answered by Nathan Ridge 3 · 0⤊ 0⤋
This Site Might Help You.
RE:
what is the name of a 21 sided shape?
2015-08-13 04:49:02 · answer #3 · answered by ? 1 · 2⤊ 0⤋
21 Sided Polygon
2016-11-14 09:41:17 · answer #4 · answered by ? 4 · 0⤊ 0⤋
Icosihenagon
Icosikaihenagon
2007-11-02 10:43:18 · answer #5 · answered by Sparkle 4 · 1⤊ 0⤋
icosikaihenagon, icosi means 20, henagon means 1. Its is derived from Greek numerals. Most people prefer to call it a 21-gon.
2014-03-18 17:01:42 · answer #6 · answered by Serena 1 · 1⤊ 0⤋
it is 21-sided polygon
no special name for it
icosahedron is 20 sided not 21
2007-11-02 10:59:40 · answer #7 · answered by isaak i 2 · 0⤊ 1⤋
they don't have names... one with 21 side is just referred to as a 21-a-gon.
2007-11-02 10:42:59 · answer #8 · answered by Anonymous · 0⤊ 1⤋
For the best answers, search on this site https://shorturl.im/axCds
Huh??? You mean the Isocahedron that has 20 triangular faced sides? Isocahedron.
2016-04-06 22:23:19 · answer #9 · answered by Farin 4 · 0⤊ 1⤋
icosihenagon
2007-11-02 10:43:14 · answer #10 · answered by atti_cat 4 · 1⤊ 0⤋