1. Matematik köşegen(el).
    The two diagonals of a square cross in the center. Draw a diagonal line to divide the
    square into two.
    diagonal element: köşegenel öge.
    diagonal matrix: köşegenel dizey.
    diagonal of a matrix: dizey köşegeni.
  2. çapraz, verev.
    a cloth with a diagonal pattern.
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