Definition of Pentagonals

1. pentagonal [n] - See also: pentagonal

Lexicographical Neighbors of Pentagonals

pentafluoride
pentafluorides
pentafluoroethane
pentafluoropyridine
pentafluorostyrene
pentaformylgitoxin
pentagastrin
pentagastrin test
pentaglot
pentaglycine
pentagon
pentagonal
pentagonal prism
pentagonal prisms
pentagonally
pentagonals
pentagonite
pentagonous
pentagons
pentagram
pentagrammatic
pentagramme
pentagrammes
pentagrammic
pentagrams
pentagraph
pentagraphic
pentagraphical
pentagraphs
pentagrid

Literary usage of Pentagonals

Below you will find example usage of this term as found in modern and/or classical literature:

1. The Monthly Review by Ralph Griffiths (1819)
"... a square, or the sum of two, three, or four squares; a pentagonal number, or the sum of two, three, four, or five pentagonals; and so on, ..."

2. Intercollegiate Debates edited by Paul Martin Pearson, Egbert Ray Nichols (1913)
"Appendix I. names about thirty triangulars, three pentagonals, and one quadrangular league. An examination of the records, where they cover a period of more ..."

3. An Elementary Investigation of the Theory of Numbers: With Its Application by Peter Barlow (1811)
"1. Hence, by making successively m = 3, 4, 5, &c., we shall have the following results. A1J. Triangular numbers ?*? .squares - - - - as Pentagonals ..."

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