Search results

...of two or more [[line (Euclidean geometry)|lines]], generally in an angle, polygon or polyhedron. Vertices appear also in [[graph theory]] as basic elements o

...-sided polygon ([[heptadecagon]]), the first new construction of a regular polygon since ancient Greek times (reference?).

{{r|Polygon}}

...three-dimensional geometric closed figure bounded by a connected set of [[polygon]]s. A polyhedron, in Euclidian geometry, must have at least four faces. A p A convex polyhedron bounded by faces which are all the same-sized regular polygon is known as a [[Platonic solid]]. There are only five Platonic solids, sho

{{r|Cyclic polygon}}

{{r|Polygon}}

{{r|Polygon}}

{{r|Polygon}}

{{r|Polygon}}

{{r|Polygon}}

{{r|Polygon}}

{{r|Polygon}}

{{r|Polygon}}

A steradian is also equal to the spherical area of a [[polygon]] having an [[angle excess]] of 1 radian, to 1/4[[pi|π]] of a complete [[s

{{r|Polygon}}

A '''rectangle''' is a [[polygon]] of four sides with the four vertex angles equal. All four angles are 90 d

A '''rhombus''' or '''rhomb''' is a four-sided [[polygon]] (a [[quadrilateral]]) with sides of equal length. The angles of each pa

A '''square''' is a regular [[polygon]] of four sides. The four sides are of equal length, and the four angles a

...uch as [[point (geometry)|points]], [[line (Euclidean geometry)|lines]], [[polygon]]s, [[solid (geometry)|solid]]s, [[vector]]s, [[surface (geometry)|surfaces

...is far from trivial even in the "simple" case that the closed curve is a [[polygon]].