names of polygons

Name

Those

Polygons

3-6 Sides 27-30 sides 51-59 sides

7-10 Sides 31-32 sides 61-69 sides

11-14 Sides 33-36 sides 71-79 sides

15-18 Sides 37-40 sides 81-89 sides

19-22 Sides 50,60,70and 80sides

91-99 sides

23-26 sides 41-49 sides 90, 100, 1 000 and

10 000

Many Sides

Sum of all External angles is 360 andInternal + exterior add to 180

Three

• Triangle

• i = 60, e = 120

Four

• Square

• i = 90. e = 90

Five

• Pentagon

• i = 108. e = 72

Six

• Hexagon

• i = 120. e = 60

Seven

• Heptagon

• i = 128 4/7, e = 51 3/7

Eight

• Octagon

• i = 135. e = 45

Nine

• Nonagon

• i = 140. e = 40

Ten

• Decagon

• i = 144. e = 36

Eleven

• Hendecagon

• i = 147 9/11, e = 32 2/11

Twelve

• Dodecagon

• i = 150. e = 30

Thirteen

• Triskaidecagon

• i = 152 4/13. e = 27 9/13

Fourteen

• Tetrakaidecagon

• i = 154 4/14. e = 25 10/14

Fifteen

• Pendedecagon

• i = 156, e = 24

Sixteen

• Hexdecagon

• i = 157½ e = 22½

Seventeen

• Heptdecagon

• i = 158 13/17 e = 21 4/13

Eighteen

• Octdecagon

• i = 154 4/14 e = 21 4/13

Nineteen

• Enneadecagon

• i = 161 1/19, e = 18 18/19

Twenty

• Icosagon

• i = 162 e = 18

TwentyOne

• Icosikaihenagon

• i = 162 18/21 e = 17 3/21

TwentyTwo

• Icosikaidigon

• i = 163 14/22 e = 16 8/22

TwentyThree

• Icosikaitrigon

• i = 165 8/23, e = 15 15/23

TwentyFour

• IIcosikaitetragon

• i = 165 e = 15

TwentyFive

• Icosikaipentagon

• i = 165 15/25 e = 14 10/25

TwentySix

• Icosikaihexagon

• i = 166 4/26 e = 13 22/26

TwentySeven

• Icosikaiheptagon

• i = 166 18/27, e = 13 9/27

TwentyEight

• IIcosikaioctagon

• i = 167 4/28 e = 12 24/28

TwentyNine

• Icosikaienneagon

• i = 167 17/29 e = 12 12/29

Thirty

• Triacontagon

• i = 168 e = 12

ThirtyOne

• Triacontakaihenagon

• i = 168 12/31 e = 11 19/31

ThirtyTwo

• Triacontakaidigon

• i = 168 24/32 e = 11 8/32

ThirtyThree

• Triacontakaitrigon

• i = 169 13/33, e = 10 30/33

ThirtyFour

• Triacontakaitetragon

• i = 169 14/34 e = 10 20/34

ThirtyFive

• Triacontakaipentagon

• i = 169 15/35 e = 10 10/35

ThirtySix

• Triacontakaihexagon

• i = 170 e = 10

ThirtySeven

• Triacontakaiheptagon

• i = 170 10/37, e = 9 27/37

ThirtyEight

• Triacontakaioctagon

• i = 170 20/38 e = 9 18/38

ThirtyNine

• Triacontakaienneagon

• i = 170 30/39 e = 9 9/39

Forty

• Tetracontagon

• i = 171 e = 9

Tetracontakaihenagon

41

Tetracontakaidigon

42

Tetracontakai

trigon

43

Tetracontakaitetragon

44

Tetracontakaipentagon

45

Tetracontakaihexagon

46

Tetracontakaiheptagon

47

Tetracontakaioctagon

48

TetracontakaiEnneagon

49

Fifty

• Pentacontagon

• i = 172 40/50, e = 710/50

Sixty

• Hexacontagon

• i = 174 e = 6

Seventy

• Heptacontagon

• i = 170 30/39 e = 99/39

Eighty

• Octacontagon

• i = 175½ e = 4½

Pentacontakaihenagon

51

Pentacontakaidigon

52

Pentacontakai

trigon

53

Pentacontakaitetragon

54

Pentacontakaipentagon

55

Pentacontakaihexagon

56

Pentacontakaiheptagon

57

Pentacontakaioctagon

58

PentacontakaiEnneagon

59

Hexacontakaihenagon

61

Hexacontakaidigon

62

Hexacontakai

trigon

63

Hexacontakaitetragon

64

Hexacontakaipentagon

65

Hexacontakaihexagon

66

Hexacontakaiheptagon

67

Hexacontakaioctagon

68

HexacontakaiEnneagon

69

Heptacontakaihenagon

71

Heptacontakaidigon

72

Heptacontakai

trigon

73

Heptacontakaitetragon

74

Heptacontakaipentagon

75

Heptacontakaihexagon

76

Heptacontakaiheptagon

77

Heptacontakaioctagon

78

HeptacontakaiEnneagon

79

Octacontakaihenagon

81

Octacontakaidigon

82

Octacontakai

trigon

83

Octacontakaitetragon

84

Octacontakaipentagon

85

Octacontakaihexagon

86

Octacontakaiheptagon

87

Octacontakaioctagon

88

OctacontakaiEnneagon

89

Enneacontakaihenagon

91

Enneacontakaidigon

92

Enneacontakai

trigon

93

Enneacontakaitetragon

94

Enneacontakaipentagon

95

Enneacontakaihexagon

96

Enneacontakaiheptagon

97

Enneacontakaioctagon

98

EnneacontakaiEnneagon

99

Ninety

• Enneacontagon

• i = 176, e = 4

100

• Hectagon

• i = 176 40/100 e = 360/100

1 000

• Chiliagon

• i = 179 640/1000 e = 360/1000

10 000

• Myriagon

• i = 179 640/10 000 e = 360/10 000

105

• Megagon

• i = 179 99 640/ 100 000 e = 360/100 000

10100

• Googolgonalmost

• i = 180 e = 0 (Almost)