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CROSSWORD
ANSWER

nonagonal

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The answer NONAGONAL has 1 possible clue(s) in existing crosswords.

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The word NONAGONAL is VALID in some board games. Check NONAGONAL in word games in Scrabble, Words With Friends, see scores, anagrams etc.

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Definitions of nonagonal in various dictionaries:

NONAGONAL - A nonagonal number is a figurate number that extends the concept of triangular and square numbers to the nonagon (a nine-sided polygon). However, unl...

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Keep reading for additional results and analysis below.

Possible Crossword Clues
Nine-sided

Last Seen in these Crosswords & Puzzles
Jan 4 2014 The Times - Concise

Possible Dictionary Clues
Having nine sides and nine angles

Nonagonal might refer to
A Nonagonal number is a figurate number that extends the concept of triangular and square numbers to the nonagon (a nine-sided polygon). However, unlike the triangular and square numbers, the patterns involved in the construction of nonagonal numbers are not rotationally symmetrical. Specifically, the nth nonagonal numbers counts the number of dots in a pattern of n nested nonagons, all sharing a common corner, where the ith nonagon in the pattern has sides made of i dots spaced one unit apart from each other. The nonagonal number for n is given by the formula:* * * * * * * n * ( * 7 * n * − * 5 * ) * * 2 * * * . * * * {\displaystyle {\frac {n(7n-5)}{2}}.} * The first few nonagonal numbers are: * * 1, 9, 24, 46, 75, 111, 154, 204, 261, 325, 396, 474, 559, 651, 750, 856, 969, 1089, 1216, 1350, 1491, 1639, 1794, 1956, 2125, 2301, 2484, 2674, 2871, 3075, 3286, 3504, 3729, 3961, 4200, 4446, 4699, 4959, 5226, 5500, 5781, 6069, 6364, 6666, 6975, 7291, 7614, 7944, 8281, 8625, 8976, 9334, 9699. (sequence A001106 in the OEIS)The parity of nonagonal numbers follows the pattern odd-odd-even-even. * Letting N(n) give the nth nonagonal number and T(n) the nth triangular number, * * * * * * 7 * N * ( * n * ) * + * 3 * = * T * ( * 7 * n * − * 3 * ) * * . * * * {\displaystyle {7N(n)+3=T(7n-3)}.}

Nonagonal might refer to

A Nonagonal number is a figurate number that extends the concept of triangular and square numbers to the nonagon (a nine-sided polygon). However, unlike the triangular and square numbers, the patterns involved in the construction of nonagonal numbers are not rotationally symmetrical. Specifically, the nth nonagonal numbers counts the number of dots in a pattern of n nested nonagons, all sharing a common corner, where the ith nonagon in the pattern has sides made of i dots spaced one unit apart from each other. The nonagonal number for n is given by the formula:*
*
*
*
*
*
* n
* (
* 7
* n
* −
* 5
* )
*
* 2
*
*
* .
*
*
* {\displaystyle {\frac {n(7n-5)}{2}}.}
* The first few nonagonal numbers are:
*
* 1, 9, 24, 46, 75, 111, 154, 204, 261, 325, 396, 474, 559, 651, 750, 856, 969, 1089, 1216, 1350, 1491, 1639, 1794, 1956, 2125, 2301, 2484, 2674, 2871, 3075, 3286, 3504, 3729, 3961, 4200, 4446, 4699, 4959, 5226, 5500, 5781, 6069, 6364, 6666, 6975, 7291, 7614, 7944, 8281, 8625, 8976, 9334, 9699. (sequence A001106 in the OEIS)The parity of nonagonal numbers follows the pattern odd-odd-even-even.
* Letting N(n) give the nth nonagonal number and T(n) the nth triangular number,
*
*
*
*
*
* 7
* N
* (
* n
* )
* +
* 3
* =
* T
* (
* 7
* n
* −
* 3
* )
*
* .
*
*
* {\displaystyle {7N(n)+3=T(7n-3)}.}

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