Varignon and Wittenbauer Parallelograms. Level: High School, SAT Prep, College geometry.

Varignon parallelogram: The figure formed when the midpoints of the sides of any quadrilateral are joined in order is a parallelogram.

Wittenbauer parallelogram: If the trisectors of each side of a quadrilateral are found, the figure formed by connecting and extending adjacent points on either side of a vertex is a parallelogram.

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Last updated: February 13, 2007