### Definition Of diagonial

**noun**

(of a straight line) joining two opposite corners of a square, rectangle, or other straight-sided shape.

Draw two diagonal lines dividing the square and the rectangle into triangles.

a straight line joining two opposite corners of a square, rectangle, or other straight-sided shape.

Do this at a diagonal , from one corner of the square to the opposite corner.

### Example Of diagonial

**diagonal** seat belt

A **diagonal** line separated a triangle of white and another of blue that together formed a rectangle.

After a queen pawn opening, Hort threatened mate on the long **diagonal** .

Arrange in a circle, in corners or in a **diagonal** .

At one point the dancer stamped nimbly in a **diagonal** line across the stage and stopped in the front corner.

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