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S408 Penrose 階梯
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学用数学
GeoGebra
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柱體建築師
兩組對邊相等和有直角的四邊形
第八周作业
拼砌四邊形
異分母分數減法
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自行车运动
軌道
自由落体
圓周角與圓心角之度數關係臆測（圓心在圓周角的外部）
Copy of Quiz on Solving Quadratic Inequalities 解二次不等式：測驗
Discover Topics
Solids or 3D Shapes
Symmetry
Right Triangles
Geometric Distribution
Centroid or Barycenter