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10 sided 2D shape is called a decagon

20 sided 2D shape is called a icosagon

30 sided 2D shape is a swimming pool

40 sided 2D shape is unknown

50 sided 2D shape is unknown

60 sided 2d shape is unknown

70 sided 2d shape is unknown

80 sided 2d shape is unknown

90 sided 2d shape is unknown

100 sided 2d shape is unknown

110 sided 2d shape is unknown

111 sided 2d shape is unknown

120 sided 2d shape is unknown

130 sided 2d shape is unknown

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12y ago
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13y ago

A dodecagon (in 2-dimensions) a dodecahedron (in 3-d).

this is wrong a 12 sided shape is called a dodecagon

it is called a icosagon

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Q: What do you call an 20 sided shape?
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