pentagon

See also: Pentagon and pentàgon

English

a regular pentagon (sense 1)

Etymology

From Middle French pentagone, from Late Latin pentagōnum, from Ancient Greek πεντάγωνον (pentágōnon), noun use of the neuter of the adjective πεντάγωνος (pentágōnos, “five-angled”), from πέντε (pénte, “five”) + -γωνος (-gōnos, “angled”). Equivalent to penta- +‎ -gon.

Pronunciation

• (US, Canada) enPR: pĕn'təgän, IPA^(key): /ˈpɛn.təˌɡɑn/
• (UK) enPR: pĕn'təgən, pĕn'təgŏn, IPA^(key): /ˈpɛn.tə.ɡən/, /ˈpɛn.tə.ɡɒn/
• Hyphenation: pen‧ta‧gon

• Audio (Canada):

  (file)

Noun

pentagon (plural pentagons)

2. (geometry) A polygon with five sides and five angles.

   Synonyms: 5-gon, quinquangle

   Hypernyms: polygon < shape; see also Thesaurus:polygon

   Meronyms: angle, side; see also Thesaurus:polygon

   Coordinate terms: triangle (3), quadrilateral (4), hexagon (6), heptagon (7), octagon (8), nonagon (9), decagon (10); see also Thesaurus:polygon

   • 1884, A Square [pseudonym; Edwin A. Abbott], Flatland […] , London: Seeley & Co., Part I: This World, § 1.— Of the Nature of Flatland, page 3:

     Imagine a vast sheet of paper on which straight Lines, Triangles, Squares, Pentagons, Hexagons, and other figures, instead of remaining fixed in their places, move freely about, […]

   • 2023 January 23 [2018 October 31], Frank Jacobs, “Colorado Is Not a Rectangle—It Has 697 Sides”, in Big Think‎^[1], archived from the original on 20 April 2023:

     So if Colorado is not a rectangle, what is it? Well, not a pentagon, (Greek for 5-sider), hexagon (6-sider), or a heptagon (7-sider), but a—hold on to something—hexahectaenneacontakaiheptagon (697-sider).

3. (military) A fort with five bastions.

Derived terms

• pentagonal
• pentagonoid
• pentagonous

Related terms

• pentagram (type of 5-pointed star)

Translations

a polygon with five sides and five angles

• Afrikaans: pentagoon, vyfhoek (af)
• Altai:

  Southern Altai: бештолык (beštolïk)

• Arabic: مُخَمَّس m (muḵammas), خُمَاسِيّ أَضْلَاع m (ḵumāsiyy ʔaḍlāʕ)
• Armenian: հնգանկյուն (hy) (hngankyun)
• Asturian: pentágonu m
• Belarusian: пяціку́тнік m (pjacikútnik)
• Bengali: পঞ্চভুজ (bn) (poncobhuj)
• Bulgarian: петоъгъ́лник m (petoăgắlnik)
• Burmese: ပဉ္စဂံ (my) (panyca.gam)
• Catalan: pentàgon (ca) m
• Chinese:

  Mandarin: 五角形 (zh) (wǔjiǎoxíng), 五边形 (zh) (wǔbiānxíng)

• Czech: pětiúhelník (cs) m inan
• Danish: pentagon (da) c, femkant (da) c
• Dutch: vijfhoek (nl) m
• East Frisian Low German: fiifkâant m
• Esperanto: kvinlatero, kvinangulo
• Estonian: viisnurk (et), pentagoon
• Finnish: viisikulmio (fi), pentagoni (fi)
• French: pentagone (fr) m
• Frisian:

  North Frisian: Fifhuk m (Sylt)

  Saterland Frisian: Fieuwkaant n

  West Frisian: fiifhoek c

• Friulian: pentagon m
• Galician: pentágono (gl) m
• Georgian: ხუთკუთხედი (xutḳutxedi)
• German: Fünfeck (de) n, Pentagon (de) n
• Greek: πεντάγωνο (el) n (pentágono)

  Ancient Greek: πεντάγωνον n (pentágōnon)

• Gujarati: પંચકોણ (pañckoṇ)
• Hebrew: מחומש \ מְחֻמָּשׁ m (mekhumásh)
• Hindi: पंचकोण (hi) m (pañckoṇ)
• Hungarian: ötszög (hu)
• Icelandic: fimmhyrningur (is) m
• Ido: pentagono (io)
• Indonesian: segi lima
• Irish: peinteagán
• Italian: pentagono (it) m
• Japanese: 五角形 (ja) (ごかくけい, gokakukei, ごかっけい, gokakkei)
• Kannada: ಪಂಚಕೋಣ (pañcakōṇa)
• Kazakh: бесбұрыш (besburıš)
• Khmer: បញ្ចកោណ (km) (pañcaʼkaon)
• Korean: 오각형 (ko) (ogakhyeong)
• Kumyk: беш мююшлюк (beş müyuşlük)
• Latvian: piecstūris
• Luxembourgish: Fënnefeck m
• Macedonian: пета́голник m (petágolnik)
• Malay: pancakona, segi lima
• Māori: taparima
• Navajo: ashdlaʼgo bízniikʼą́, ashdlaʼgóó adeezʼá
• Norwegian:

  Bokmål: femkant (no) m, pentagon (no) m

  Nynorsk: femkant m, pentagon m

• Persian: please add this translation if you can
• Polish: pięciokąt (pl) m
• Portuguese: pentágono (pt) m
• Romagnol: please add this translation if you can
• Russian: пятиуго́льник (ru) m (pjatiugólʹnik)
• Sardinian: pentàgonu m
• Scottish Gaelic: còig-cheàrnach m
• Serbo-Croatian:

  Cyrillic: петерокут m, петоугаоник m

  Latin: peterokut (sh) m, petougaonik m

• Slovak: päťuholník m
• Slovene: peterokotnik (sl) m
• Sorbian:

  Lower Sorbian: pěśirožk m

  Upper Sorbian: pjećróžk m, pjećiróžk m

• Spanish: pentágono (es) m
• Swahili: pentagoni
• Swedish: pentagon (sv) c
• Tagalog: limsiha, pentagono, pentagon
• Tamil: ஐங்கோணம் (ta) (aiṅkōṇam)
• Thai: ห้าเหลี่ยม (th) (hâa-lìiam)
• Tibetan: གཞོགས་ལྡ (gzhogs lda)
• Turkish: beşgen (tr)
• Ukrainian: п'ятику́тник m (pʺjatykútnyk)
• Uzbek: please add this translation if you can
• Vietnamese: ngũ giác (vi), hình năm cạnh
• Welsh: pumongl m
• Zulu: unxanhlanu class 1a/2a

Anagrams

• pantogen

Danish

Noun

pentagon c (singular definite pentagonen, plural indefinite pentagoner)

1. pentagon

Declension

Declension of pentagon

common gender	singular		plural
	indefinite	definite	indefinite	definite
nominative	pentagon	pentagonen	pentagoner	pentagonerne
genitive	pentagons	pentagonens	pentagoners	pentagonernes

Synonyms

• femkant

Related terms

• pentagonal

References

• “pentagon” in Den Danske Ordbog

Friulian

Noun

pentagon m (plural pentagons)

1. pentagon

Norwegian Bokmål

Etymology

From penta- +‎ -gon.

Noun

pentagon m (definite singular pentagonen, indefinite plural pentagoner, definite plural pentagonene)

1. (geometry) a pentagon

Synonyms

• femkant

References

• “pentagon” in The Bokmål Dictionary.
• “pentagon” in Norwegian Academy Dictionary (NAOB).

Norwegian Nynorsk

Etymology

From penta- +‎ -gon.

Noun

pentagon m (definite singular pentagonen, indefinite plural pentagonar, definite plural pentagonane)

1. (geometry) a pentagon

Synonyms

• femkant

References

• “pentagon” in The Nynorsk Dictionary.

Romanian

Etymology

Etymology tree

Latin pentagonus

French pentagonebor.

Romanian pentagon

Borrowed from French pentagone, from Latin pentagonus.

Noun

pentagon n (plural pentagoane)

1. Pentagon

Declension

	singular		plural
	indefinite	definite	indefinite	definite
nominative-accusative	pentagon	pentagonul	pentagoane	pentagoanele
genitive-dative	pentagon	pentagonului	pentagoane	pentagoanelor
vocative	pentagonule		pentagoanelor

Further reading

• “pentagon”, in DEX online—Dicționare ale limbii române (Dictionaries of the Romanian language) (in Romanian), 2004–2026

Tagalog

Etymology

Etymology tree

Proto-Indo-European *pénkʷe

Proto-Hellenic *pénkʷe

Ancient Greek πέντε (pénte)

Ancient Greek πεντα- (penta-)

Proto-Indo-European *ǵónu

Proto-Hellenic *gónu

Proto-Hellenic *-ía

Proto-Hellenic *gonwía

Ancient Greek γωνία (gōnía)

Proto-Indo-European *-os

Proto-Indo-European *-om

Proto-Hellenic *-on

Ancient Greek -ον (-on)

Ancient Greek πεντάγωνον (pentágōnon)bor.

Late Latin pentagōnumder.

Middle French pentagoneder.

English pentagonbor.

Tagalog pentagon

Borrowed from English pentagon, from Middle French pentagone, from Late Latin pentagōnum, borrowed from Ancient Greek πεντάγωνον (pentágōnon), from πεντα- (penta-) + γωνία (gōnía) + -ον (-on). Doublet of pentagono.

Pronunciation

• (Standard Tagalog) IPA^(key): /ˈpentaɡon/ [ˌpɛn̪.t̪ɐˈɣ̠on̪]
• Rhymes: -entaɡon
• Syllabification: pen‧ta‧gon

Noun

péntagón (Baybayin spelling ᜉᜒᜈ᜔ᜆᜄᜓᜈ᜔) (geometry)

1. pentagon

   Synonyms: pentagono, (neologism) limsiha

Further reading

• “pentagon”, in Pambansang Diksiyonaryo | Diksiyonaryo.ph, 2018