diagonal

As adjectives the difference between diagonal and bidiagonal

is that diagonal is (geometry) joining two nonadjacent vertices (of a polygon or polyhedron) while bidiagonal is (mathematics) describing a matrix that has non-zero entries along the main diagonal and either the diagonal above or the diagonal below.

As a noun diagonal

is something arranged diagonally or obliquely.

As adjectives the difference between diagonal and nondiagonal

is that diagonal is (geometry) joining two nonadjacent vertices (of a polygon or polyhedron) while nondiagonal is not diagonal.

As a noun diagonal

is something arranged diagonally or obliquely.

As adjectives the difference between diagonal and tridiagonal

is that diagonal is (geometry) joining two nonadjacent vertices (of a polygon or polyhedron) while tridiagonal is (linear algebra|of a matrix) having nonzero elements only in the main diagonal and the diagonals directly above and below it.

As a noun diagonal

is something arranged diagonally or obliquely.

As nouns the difference between diagonal and antidiagonal

is that diagonal is something arranged diagonally or obliquely while antidiagonal is the diagonal of a matrix that leads from top-right towards bottom-left.

As an adjective diagonal

is joining two nonadjacent vertices (of a polygon or polyhedron).

As nouns the difference between diagonal and hidato

is that diagonal is something arranged diagonally or obliquely while hidato is an israeli game in which the player fills in boxes with numbers, attempting to fill the grid with consecutive numbers that connect either horizontally, vertically, or diagonally.

As an adjective diagonal

is (geometry) joining two nonadjacent vertices (of a polygon or polyhedron).