1oo diagonals, because 1 side has 10 diagonals so 10 sides (10x10) = 100 diagonals! This is the correct answer..... a decagon has 35 diagonals. The equation for the this is D=n(n-3)/2 meaning diagonals = number of sides (N) multiplied by number of sides minus 3. and that number over 2. D=10(10-3)/2
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300
Probably too many.
to many
There are 35 diagonals in a 10 sided decagon
A tetra-decagon is a 14 sided polygon having 77 diagonals
35.
35
35
A decagon has 10 sides and 35 diagonals
35 diagonals
35 diagonals
54 Diagonals. * * * * * A polygon with n sides has 1/2*n*(n-3) diagonals. So a decagon would have 1/2*10*7 = 35 diagonals. How the Community answer got 54 is anybody's guess!
decagon
There are 8
A decagon has 35 diagonals