nouns
(geometry) a straight line connecting any two vertices of a polygon that are not adjacent
domain category
the pure mathematics of points and lines and curves and surfaces
is a type of (narrower)
a line traced by a point traveling in a constant direction; a line of zero curvature
"the shortest distance between two points is a straight line"
a line or cut across a fabric that is not at right angles to a side of the fabric
an oblique line of squares of the same color on a checkerboard
"the bishop moves on the diagonals"
is a part of
a board having 64 squares of two alternating colors
is a type of (narrower)
a formation of people or things one behind another
"the line stretched clear around the corner"; "you must wait in a long line at the checkout counter"
is a type of (narrower)
a formation of people or things one beside another
"the line of soldiers advanced with their bayonets fixed"; "they were arrayed in line of battle"; "the cast stood in line for the curtain call"
(mathematics) a set of entries in a square matrix running diagonally either from the upper left to lower right entry or running from the upper right to lower left entry
is a part of
a matrix with the same number of rows and columns
domain category
a science (or group of related sciences) dealing with the logic of quantity and shape and arrangement
is a type of (narrower)
(mathematics) an abstract collection of numbers or symbols
"the set of prime numbers is infinite"
a punctuation mark (/) used to separate related items of information