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Q: How many diagonals to a dodecagon?

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A regular 12 sided dodecagon has 54 diagonals.

A dodecagon has 1/2*12*(12-3) = 54 diagonals.

6

There are 54 diagonals in a 12 sided shape

i think it is 54

54

A undecagon has 44 diagonals. A dodecagon has 54 diagonals. An octagon has 20 diagonals. A heptagon has 14 diagonals.

it's a 12 sided shape and it has 54 diagonals :D

It is: 0.5*(144-36) = 54 diagonals

12-3 = 9

The formula is: 0.5*(n2-3n) = number of diagonals when n is the number of sides of the polygon

It is a dodecagon which has 12 sides Check: 0.5*(144-36) = 54 diagonals

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