## dual- The
**dual of a solid**is formed by joining the centers of adjacent faces with straight lines. In the resulting dual solid, each vertex of the dual corresponds to a face on the original, each face on the dual to an original vertex, while the edges match, one for one. - The
**dual of a tessellation**is obtained by replacing each tile with a point at its center, and each edge between tiles with an edge joining vertices. The dual of a regular tessellation is a regular tessellation; the dual of a semi-regular tessellation is not semi-regular.
## Related category• SOLIDS AND SURFACES | |||||

Home • About • Copyright © The Worlds of David Darling • Encyclopedia of Alternative Energy • Contact |