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S9G4 黃金矩形與黃金比例(練習)
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学用数学
GeoGebra
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常见四边形是否是双心四边形
科赫雪花
第八周作业
第八周作业3
中华人民共和国国旗
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截痕
林昌翰 拋物面鏡
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多邊形陣列
C60足球模型(弧线)
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Piecewise Functions
Functions
Linear Equations
Vectors 2D (Two-Dimensional)
Reflection