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Finsler-Hadwiger Theorem
A square rotates around a vertex shared with another square. The quadrilateral with the centers of the squares and the midpoints of the dashed segments as vertices is always a square.
Contributed by:
Sándor Kabai
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Finsler-Hadwiger Theorem
(
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MathWorld
)
PERMANENT CITATION
Sándor Kabai
"
Finsler-Hadwiger Theorem
"
http://demonstrations.wolfram.com/FinslerHadwigerTheorem/
Wolfram Demonstrations Project
Published: September 28, 2007
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