Diagonal

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Related to diagonally: Minor diagonal

diagonal

1. Maths connecting any two vertices that in a polygon are not adjacent and in a polyhedron are not in the same face
2. Maths a diagonal line or plane
3. Chess any oblique row of squares of the same colour
4. cloth marked or woven with slanting lines or patterns
5. one front leg and the hind leg on the opposite side of a horse, which are on the ground together when the horse is trotting

Diagonal

Joins two nonadjacent sides of a polygon with a slanted or oblique direction from one corner to the other; their use in a square or rectangle produces two triangular shapes.

Diagonal

 

a dense fabric of twisted cotton or wool yarn. Diagonals are characterized by sharp ribs on the surface running at an angle of more than 45° to the selvage. The ribs are obtained by proper selection of the ratio of the density and thickness of the warp and woof, as well as by the special interweaving of threads. Diagonal is used for uniforms (from wool warp and cotton woof), coats, and jackets.


Diagonal

 

(1) The diagonal of a polygon is the line segment between two nonadjacent vertices. If the number of vertices of a polygon is n, then the number of diagonals is n(n -3)12.

(2) The diagonal of a polyhedron is the line segment between two vertices that do not lie on the same face.

diagonal

[dī′ag·ən·əl]
(civil engineering)
A sloping structural member, under compression or tension or both, of a truss or bracing system.
(mathematics)
The set of points all of whose coordinates are equal to one another in an n-dimensional coordinate system.
A line joining opposite vertices of a polygon with an even number of sides.
(optics)
A plane mirror or prism face mounted near the eyepiece of a telescope at an angle to the light path, to redirect the light for convenience of observation or to reduce the intensity of the image of the sun so that it can be observed directly.
(textiles)
A heavy twilled fabric.

diagonal

In a framed structure, an inclined member running across a panel, 7, e.g., as in a truss.
References in classic literature ?
The death's-head at the corner diagonally opposite, had, in the same manner, the air of a stamp, or seal.
From Balkh to Bombay men know that rough-ridged print with the old scar running diagonally across it.
Athwart his back, diagonally, and extending high above his left shoulder, was an Arab gum of Saladin's time, that was splendid with silver plating from stock clear up to the end of its measureless stretch of barrel.
A low bluff ran diagonally across one end of the mesa, and in the face of this bluff were the mouths of many caves.
Ajor, too, was mystified, as we had come up from diagonally behind her so that she had no idea that we were near until she was swung to Ace's back.
A dark figure crossed the compound diagonally from the beach gate, where whoever it was had been watching the vessel.
He cut diagonally across the open space and dashed into a wide-mouthed cave.
The thong was cut across, diagonally, almost as clean as though done by a knife.
A seat protruded from each of the four sides of the pedestals--just a flat board with a support running from its outer end diagonally to the base of the pedestal.
The man was older, dark, with an evil face made more forbidding by a long scar extending from near the left temple diagonally downward into the black mustache; though in my dreams it seemed rather to haunt the face as a thing apart--I can express it no otherwise--than to belong to it.
Diagonally across the squared ring, Danny faced him.
At last, with business- like persistency, he reached the Square, and made diagonally for the number 10.