In geometry, a diagonal is a line segment joining two vertices of a polygon or polyhedron, when those vertices are not on the same edge. Informally, any sloping line is called diagonal.

A line segment joining one corner to another but is not an edge is called a diagonal. In other words, a diagonal is a line that connects the opposite vertices of a polygon.

Jul 3, 2026 · The meaning of DIAGONAL is joining two vertices of a rectilinear figure that are nonadjacent or two vertices of a polyhedral figure that are not in the same face.

DIAGONAL definition: 1. A diagonal line is straight and sloping, not horizontal or vertical, for example joining two…. Learn more.

Dec 16, 2025 · In this video, you’ll learn the diagonal meaning and see clear diagonal examples in polygons like squares, rectangles, and other shapes.

A diagonal is a line segment connecting the opposite vertices or the non-adjacent vertices of a polygon. Learn about the diagonals of polygons, examples, & more.

Jan 14, 2024 · A diagonal is a line segment that connects two non-adjacent vertices in a polygon or polyhedron. In simpler terms, it’s like a shortcut that cuts across a shape from one corner to a non …

For example, in geometry a diagonal is any line that goes between the corners of a polygon. So a square has two diagonals, and a five-sided shape has five diagonals.

A diagonal is a straight line that connects two non-adjacent corners (vertices) in a polygon. In simpler terms, it's a line that goes across a shape from one corner to another corner that isn't right next to it.

A diagonal is a line segment that connects two non-adjacent vertices (or corners) of a polygon. In simpler terms, it joins two corners that aren't already connected by an edge of the shape.