Una diagonal es todo segmento que une dos vértices diagonalmente no consecutivos de un polígono o de un poliedro. En sentido coloquial, una diagonal es una recta o segmento con cierta inclinación o un conjunto de elementos alineados de esta manera.

Leer el artículo completo en Wikipedia · CC-BY-SA

In geometry, a diagonal is a line segment joining two vertices of a polygon or polyhedron, when those vertices are not on the same edge. Informally, any sloping line is called diagonal. The word "diagonal" derives from the ancient Greek διαγώνιος diagonios, "from angle to angle" (from διά- dia-, "through", "across" and γωνία gonia, "angle", related to gony "knee"); it was used by both Strabo and Euclid to refer to a line connecting two vertices of a rhombus or cuboid, and later adopted into Latin as diagonus ("slanting line"). In matrix algebra, a diagonal of a square matrix is a set of entries extending from one corner to the farthest corner. There are also other, non-mathematical uses.

Leer el artículo completo en Wikipedia · CC-BY-SA