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  1. DIAGONAL Definition & Meaning - Merriam-Webster

    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.

  2. DIAGONAL | English meaning - Cambridge Dictionary

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

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

    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. Learn the definition, formula, examples & practice questions.

  6. Diagonal Definition (Illustrated Mathematics Dictionary)

    Illustrated definition of Diagonal: Generally means corner to corner. In Geometry: a line segment that goes from one corner to another, but...

  7. What does Diagonal mean? - Definitions.net

    A diagonal is a line segment that connects two non-adjacent vertices in a polygon, polyhedron, or any multi-dimensional geometric shape. In other words, it is the line linking two corners of a shape that is not part of its edge or base.

  8. DIAGONAL definition in American English | Collins English Dictionary

    A diagonal line or movement goes in a sloping direction, for example, from one corner of a square across to the opposite corner. ...a pattern of diagonal lines.

  9. Diagonal - definition of diagonal by The Free Dictionary

    1. a. connecting two nonadjacent angles or vertices of a polygon or polyhedron: a diagonal line. b. extending from one edge of a solid figure to an opposite edge: a diagonal plane. 2. having an oblique direction. 3. having oblique lines or markings.

  10. DIAGONAL | definition in the Cambridge English Dictionary

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