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The formula is: 0.5*(n2-3n) where n is the number of sides of the polygon.
So: 0.5*(81-27) = 27 diagonals
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How many 5 number combination are there for numbers 1 - 39 when one of the numbers is 9?
277612920, but only if any number (including 9) can appear more than once.
How many remainders are possible when a number is divided by 9?
It will probably depend on the dividend (the number to be divided)
What is the answer to -12 equals x plus 9?
-12 = x+9 x+9 -9 = -12 -9 x = -21
What is 99.9 percent repeating as a decimal?
.999 repeating = 1So 1.0think of it as7/9 = .777...8/9 = .888...9/9 = .999... 9/9 = 1
How many Calories does one gram of fat yield?
1 gram fat produce 9 calories i.e. 37.7 kJ
How many diagonals are in a nine sided figure?
A polygon with n sides has n*(n-3)/2 diagonals. Simple as that. So a 9 sided polygon has 9*6/2 = 27 diagonals.
How many diagonals are in a 7 sided polygon?
A 4-sided polygon has 2 diagonals. A 5-sided polygon, 5. 6-sided, 9. By induction, an n-sided polygon has 'n*(n-3)/2' diagonals. "n" is how many sides a shape has. so, (7)*(7-3)/2 now we have, 7*4/2 so, 28/2 = 14 Therefore, a 7-sided polygon would have 14 diagonals.
What regular polygon has 9 diagonals?
A regular octadecagon (an eighteen sided polygon) would have nine diagonals.
How many diagonals in a 9 sided polygon?
It depends. It doesn't have to always be the same shape. So it can be 0, it can be 1, as long as it has straight lines and is a closed figure, it's a polygon. * * * * * What? A polygon with n sides has n*(n-3)/2 diagonals. Simple as that. So a 9 sided polygon has 9*6/2 = 27 diagonals.
What is the formula for the number of diagonals in a nonagon?
For a 9 sided polygon it is: 0.5*(92-(3*9)) = 27 diagonals
How many diagonals does a 9-sided polygon have?
Plug 9 as n in this formula: n(n-3)/2
How many parallel sides in 9-sided polygon?
The formula for the number of diagonals that an N-sided polygon has is# diagonals = N(N-3)/2N(N-3)/29(N-3)/29*(9-3)/29*6/2 = 54/227
How many diagnals does a 9 sided polygon have?
8+7+6+5+4+3+2+1 = 36 diagonals
How many diagonals that a hexagon have?
A hexagon has 9 diagonals.
How many diagonals does a polygon with 6 sides have?
9
How many sides does a polygon have with 9 diagonals?
7
How many diagonals a four-sided figure can have?
9
