The arbelos and nine-point circles - Quang Tuan Bui

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    The arbelos and nine-point circles - Quang Tuan Bui​

    We construct some new Archimedean circles in an arbelos in connection with the nine-point circles of some appropriate triangles. We also construct two new pairs of Archimedes circles analogous to those of Frank Power.

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    LTTK CTV, 5/10/19
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