Quinquangle

//ˈkwɪŋˌkwæŋɡəl// noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    Synonym of pentagon, a regular 5-sided figure. archaic

    "And from hence also shall be the geodesy of the Icosaedrum. For the finding out of the heighth of the pyramis, there is the semidiagony of the side of the decangle and the halfe ray of the circle: But the side of the decangle is a right line subtending the halfe periphery of the side of the quinquangle, or else the greater segment of the ray proportionally cut."

Synonyms

All synonyms
pentagon

Example

More examples

"And from hence also shall be the geodesy of the Icosaedrum. For the finding out of the heighth of the pyramis, there is the semidiagony of the side of the decangle and the halfe ray of the circle: But the side of the decangle is a right line subtending the halfe periphery of the side of the quinquangle, or else the greater segment of the ray proportionally cut."

Etymology

From Late Latin quīnquangulum, use as noun of neuter of quīnquangulus (“pentagonal”). By surface analysis, quinqu- + -angle.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.