Little Star Homeschool

"Do not train children to learning by force and harshness, but direct them to it by what amuses their minds, so that you may be better able to discover with accuracy the peculiar bent of the genius of each." Plato

Robert's latest mathematical quest is to know the names of every 2 dimensional geometrical object. If you are curious too, here they are (courtesy of Dr Math):

1  monogon                  (Monogon and digon can only
2 digon be used in rather special
3 trigon, triangle circumstances. Trigon and
4 tetragon, quadrilateral tetragon are alternatives to
5 pentagon triangle and quadrilateral;
6 hexagon the adjectival forms trigonal
7 heptagon and tetragonal are more common.)
8 octagon
9 enneagon

10 decagon
11 hendecagon
12 dodecagon
13 triskaidecagon
14 tetrakaidecagon, tetradecagon
15 pentakaidecagon, pentadecagon
16 hexakaidecagon, hexadecagon
17 heptakaidecagon
18 octakaidecagon
19 enneakaidecagon

20 icosagon
21 icosikaihenagon, icosihenagon
22 icosikaidigon
23 icosikaitrigon
24 icosikaitetragon
25 icosikaipentagon
26 icosikaihexagon
27 icosikaiheptagon
28 icosikaioctagon
29 icosikaienneagon

30 triacontagon
31 triacontakaihenagon
32 triacontakaidigon
33 triacontakaitrigon
34 triacontakaitetragon
35 triacontakaipentagon
36 triacontakaihexagon
37 triacontakaiheptagon
38 triacontakaioctagon
39 triacontakaienneagon

40 tetracontagon
41 tetracontakaihenagon
42 tetracontakaidigon
43 tetracontakaitrigon
44 tetracontakaitetragon
45 tetracontakaipentagon
46 tetracontakaihexagon
47 tetracontakaiheptagon
48 tetracontakaioctagon
49 tetracontakaienneagon

50 pentacontagon ...
60 hexacontagon ...
70 heptacontagon ...
80 octacontagon ...
90 enneacontagon ...
100 hectogon, hecatontagon
1000 chiliagon
10000 myriagon

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