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On the theorem of Ptolemaios - MaRDI portal

On the theorem of Ptolemaios (Q1404166)

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scientific article; zbMATH DE number 1968482
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English
On the theorem of Ptolemaios
scientific article; zbMATH DE number 1968482

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    On the theorem of Ptolemaios (English)
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    20 August 2003
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    Stimulated by promising results, delivered by appropriate Math software, the author finds a relation on products of opposite sides of a quadrangle, which turns out to be Ptolemaios' theorem in case of a quadrangle with circumference.
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    products of opposite sides of a quadrangle
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    Ptolemaios' theorem
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    quadrangle with circumference
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