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Gareth Evans

  • Theoremau Cylchoedd Haen Uwch

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    Gareth Evans

  • Theoremau Cylchoedd Haen Ganolradd

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    Gareth Evans

  • Y Cylch Unedol

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    Gareth Evans

  • Theoremau Cylchoedd 2.1.3

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    Gareth Evans

  • Hafaliad Cylch 3

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    Gareth Evans

  • Hafaliad Cylch 2

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    Gareth Evans

  • Hafaliad Cylch 1

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    Gareth Evans

  • Hafaliad Llinell Syth

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    Gareth Evans

  • Dau Bwynt Mewn Plân

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    Gareth Evans

  • Pellter o Bwynt

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    Gareth Evans

  • Pellter o Linell

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    Gareth Evans

  • Hanerydd Perpendicwlar

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    Gareth Evans

  • Hanerydd Ongl

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    Gareth Evans