Special Cases
The Varignon parallelogram is a rhombus if and only if the two diagonals of the quadrilateral have equal length.
The Varignon parallelogram is a rectangle if and only if the diagonals of the quadrilateral are perpendicular.
Read more about this topic: Varignon's Theorem
Famous quotes containing the words special and/or cases:
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—Alice Sterling Honig (20th century)
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—Calvin Coolidge (1872–1933)