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Two Butterflies Theorem II: What is it about?
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This generalization of the Two Butterflies theorem has been suggested by Nathan Bowler who observed that the two butterflies need not live on the same circle as long as the circles intersect. A further generalization appears to remove this restriction.
Butterfly Theorem and Variants
- Butterfly theorem
- 2N-Wing Butterfly Theorem
- Better Butterfly Theorem
- The Lepidoptera of the Circles
- The Lepidoptera of the Quadrilateral
- The Lepidoptera of the Quadrilateral II
- Butterflies in Quadrilaterals and Elsewhere
- Two Butterflies Theorem
- Two Butterflies Theorem II
- Two Butterflies Theorem III
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