quinquangle

/ˈkwɪŋˌkwæŋɡəl/

Etymology

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

quinquangle means synonym of pentagon, a regular 5-sided figure. Lexicurio rates it Sui generis — a strength score of 87 out of 100.

quinquangle is pronounced /ˈkwɪŋˌkwæŋɡəl/.

noun

Synonym of pentagon, a regular 5-sided figure.“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.”