Sa heometriya, an endekagono (Ingles: hendecagon; inaapod man na undecagon[1][2] o endecagon[3]) o 11-gon iyo sarong poligono na may kagsaro (onse) na gilid. An ngarang hendecagon, gikan sa Griyegong hendeka "kagsaro" asin –gon "kanto", iyo mas nagagamit kaysa sa hybrid na undecagon, na an enot na parte iyo naporma gikan sa Latin na undecim "kagsaro".[4]
- ↑ Haldeman, Cyrus B. (1922), "Construction of the regular undecagon by a sextic curve", Discussions, American Mathematical Monthly, 29 (10), doi:10.2307/2299029, JSTOR 2299029 .
- ↑ Loomis, Elias (1859), Elements of Plane and Spherical Trigonometry: With Their Applications to Mensuration, Surveying, and Navigation, Harper, p. 65.
- ↑ Brewer, Ebenezer Cobham (1877), Errors of speech and of spelling, London: W. Tegg and co., p. iv .
- ↑ Hendecagon – from Wolfram MathWorld