Back قطر فضائي Arabic Diagonal espacial Spanish Avaruuslävistäjä Finnish Diagonal espacial Galician पिंड-विकर्ण Hindi 입체대각선 Korean Lichaamsdiagonaal Dutch Rymddiagonal Swedish Просторова діагональ Ukrainian
In geometry, a space diagonal (also interior diagonal or body diagonal) of a polyhedron is a line connecting two vertices that are not on the same face. Space diagonals contrast with face diagonals, which connect vertices on the same face (but not on the same edge) as each other.[1]
For example, a pyramid has no space diagonals, while a cube (shown at right) or more generally a parallelepiped has four space diagonals.
- ^ William F. Kern, James R Bland,Solid Mensuration with proofs, 1938, p.116