Download 外角平分線定理的證明:已知ae線段平分角bac的外角,則ab:ac = be:ec

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外角平分線定理的證明:已知ae線段平分角bac的外角,則ab:ac = be:ec 外角平分線定理的證明:已知ae線段平分角bac的外角,則ab:ac = be:ec 外角平分線定理的證明:已知ae線段平分角bac的外角,則ab:ac = be:ec

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