Pentagonum

Pentagonon, s.v. "pentagonos." (Graece πεντάγωνον < πεντα- 'quinque' + γωνία 'angulus'), etiam 5-gon appellatum, in geometria est polygonon quinque angulorum vel laterum. Summa angulorum internorum in pentagono simplice est 540°.

Exempla pentagonorum

Plantae

Animalia

Mineralia

Res artificiosae

Pentagona in polyhedra
IhThTdOID5d120px120px120px120px120px120pxDodecahedronPyritohedronTetartoidumIcositetrahedron pentagonaleHexecontahedron pentagonaleTrapezohedron truncatum

 Notae 

Bibliographia
 Buchholz, Ralph H., et James A. MacDougall. 2008. "Cyclic polygons with rational sides and area." Journal of Number Theory 128 (1): 17–48. . MR 2382768. Editio interretialis.
 Conway, John H., Heidi Burgiel, et Chaim Goodman-Strauss. 2008. "Generalized Schaefli symbols: Types of symmetry of a polygon." In  The Symmetries of Things, capitulum 20, 275–78. ISBN 978-1-56881-220-5.
 Meskhishvili, Mamuka. 2020. "Cyclic Averages of Regular Polygons and Platonic Solids." Communications in Mathematics and Applications 11: 335–55. Editio interretialis.
  Robbins, D. P. 1994. "Areas of Polygons Inscribed in a Circle." Discrete and Computational Geometry 12: 223–36. .

Categoria:Polygona