Regular pentagons are of particular interest for geometers. On a regular pentagon, the inner angles are equal to . All ten diagonals have the same length. If is the length of a side and is the length of a diagonal, then
that is, the ratio between a diagonal and a side is the Golden Number.
A regular pentagon (along with its diagonals) can also be obtained as the projection of a regular pentahedron in four dimensional space onto a plane determined by two opposite edges. This is analogous to the way a square with its diagonals can be obtained as the projection of a tetrahedrononto a plane determined by two opposite edges.
|Date of creation||2013-03-22 12:10:19|
|Last modified on||2013-03-22 12:10:19|
|Last modified by||rspuzio (6075)|