英语学习：英语非前缀的几组数字表达法

1. 几个一组

twosome，pair 两个一组；

triplet 三个一组；

quaternary 四个一组；

quinary，quintuplet 五个一组；

senary，sextuplet 六个一组；

septenary 七个一组；

octonary，octave 八个一组；

nonary，ennead九个一组；

denary，decade 十个一组

2. 一倍到十倍

single， double， triple， quadruple， quintuple， sextuple， septuple， octuple， nonuple，decuple

3. 第几

1st primus (primary)

2nd secundus (secondary)

3rd tertius (tertiary)

4th quartus (quartiary)

5th quintus (quintiary)

6th sextus (sextiary)

7th septimus (septinary)

8th octavius,octavus (octavary)

9th nonus (nonary)

10th decimus (decenary)

4. Names of Polygons

    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

 （收集整理）