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  • Chebyshev Linkage Wheel

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  • Hart's A-frame Wheel

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  • Chebyshev N=2 Polygon Wheel

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  • Generalized Hart's A-frame

    Activity

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  • Cassini Wheel (N=4 4R Virtual Wheel)

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  • Exact straight line by special square

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  • Exact straight line by general square.

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  • IMAI's Exact straight line by general square.

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  • The meaning of Inverse property

    Activity

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  • Antiparallelogram Property

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  • GeoGebra's sense is odd.

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  • Line Symmetry Linkage (Alias: Imai's Butterfly)

    Activity

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  • cosθ-cosθ' = const. Bisector exact straight line #2

    Activity

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  • cosθ-cosθ' = const. exact straight line Linkage

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  • cosθ-cosθ' = const. Bisector exact straight line

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  • Toyosu Hairpin Turn Problem2

    Activity

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  • Toyosu Hairpin Turn Problem

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  • Toyosu Hairpin Turn Problem3

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  • Paucellier vs. Hart's A-frame

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  • Hart's A-frame

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  • Leg by Chebyshev Linkage

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  • Reuleaux triangle wheel by Hand

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  • Reuleaux triangle wheel W

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  • N=3 2R-Virtual Wheel (Reuleaux triangle-Omusubi)

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