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Sṳ̍p-yit piên-hìn
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Sṳ̍p-yit piên-hìn (Yîn-ngî: Hendecagon) he Sṳ̍p-yit piên chhòng, Sṳ̍p-yit kok thai ke Tô-piên-hìn. Nui-kok vì 147.2727°. Ngiâ piên-chhòng vì , mien-chit
. Chang Sṳ̍p-yit piên-hìn he kiú-kok siông-tén.
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