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Common Core Alignment ![]() |
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#1 |
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![]() the number of diagonals of a regular polygon is subtracted from the number of sides of the polygon, and the result is zero. what is the number of sides of this polygon?
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#2 |
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![]() too drunk to answer this! sorry
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#3 |
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![]() wont pentagons, hexagons, octagons etc have the same number of sides and diagnols?
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#4 |
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![]() If there are n sides, each vertex has (n-3) diagonals leading from it (there are n-1 other vertices, two of which are its neighbours; a line to any other is a diagonal). So the number of diagonals is n (n-3) / 2 (each diagonal can be started from either end). So we have to solven - n (n-3) / 2 = 0 n (n-3) - 2n = 0 n (n - 5) = 0 n = 0 or 5, obviously 0 doesn't count. So the answer is 5.
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#5 |
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![]() the number of diagonls=1/2n(n-3)0=1/2n(n-3)n-3=0n=3Remarkn is the number of sides
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#6 |
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![]() the number of diagonals is determined by the equation n(n-3)/2 where n equals the number of sides.. then in your problem, we will be having an equation;n(n-3)/2 - n = 0n(n-3) - 2n=0n^2 - 5n = 0n=5there are 5 sides.
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#7 |
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![]() no of diagnols is n(n-1)/2-n if the number of sides is 'n'so the equation becomes n(n-1)/2-2*n=0solving this one gets n=5
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#8 |
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![]() n(n-3)/2 - n = 0n(n-3) - 2n=0n^2 - 5n = 0n=0 n=5there are 5 sides.
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#9 |
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![]() i think in every polygon the maximum diagonals you can have is 1/2 of the number of its sides. for example a square has 4 sides and its has a max. of 2 diagonals. so i think a zero answer is impossible.
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