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六角錐
Author:
張庭岳
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基础知识
月相
黎曼和的副本
旋轉體：Washer Method的副本
王二星际
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Angle at Centre & Angle at Circumference: Proof 圓心角與圓周角：証明
abc731797
三次函數01
Conway's Circle
立體圖
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Rotation
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