Menelaus' Theorem
In triangle ABC, let a line DEF intersect the two sides AC and BC and an extension of AB at F, E, and D. Then AD
BE
CF = BD
CE
AF.
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Contributed by:
Jay Warendorff
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Menelaus' Theorem
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"
Menelaus' Theorem
" from
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http://demonstrations.wolfram.com/MenelausTheorem/
Contributed by:
Jay Warendorff
Plane Geometry
Triangles
Stewart's Theorem
Routh's Theorem
Ceva's Theorem
Viviani's Theorem
Napoleon's Theorem
Stengel's Theorem
Cross's Theorem
The Pivot Theorem
The Ratio Theorem
A Geometrical Theorem of Leibniz
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