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  1. What is a Diagonal - Meaning, Examples | Diagonal Line

    A diagonal is a straight line that connects the opposite corners of a polygon through its vertices. In other words, the diagonal of a polygon is a line segment that joins any two non-adjacent corners.

  2. What Is A Diagonal Line? Definitions, Types & Calculations

    Jul 14, 2025 · A diagonal refers to a straight line that runs across the vertices of a polygon and links its opposing corners. In other terms, a polygon’s diagonal is a line segment that connects any two non …

  3. What Is Diagonal in Math? Definition, Solved Examples, Facts

    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.

  4. Diagonal - Wikipedia

    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.

  5. Diagonals - GeeksforGeeks

    Jul 24, 2025 · Diagonal is a straight line connecting opposite vertices of any polygon is called the diagonal of the polygon. The length of the diagonal of the polygon is always greater than the sides of …

  6. What is a Diagonal Line? Definition and Examples - Twinkl

    What is a diagonal line in a shape? In geometry, a diagonal line is a straight line segment that joins two corners of a polygon, but is not an edge. It goes through the middle of the shape. It does not go …

  7. Diagonal Definition (Illustrated Mathematics Dictionary)

    Generally means "corner to corner". In Geometry: a line segment that goes from one corner to another, but is not an edge. In Matrices: The elements where the row number is the same as the column …