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Author:
李春培
GeoGebra
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拼砌四邊形
四邉形 (四年級) 教師版
【案例】圆柱体内放置一个大球六个小球
兩組對邊相等的四邊形
第八周作业
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全等三角形: 重溫
F2_Ch11.1_三角學(對鄰斜)
Area
反射(鉛垂線、水平線及斜線) Reflection (vertical line, horizontal line and line)
平面向量基本定理
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Conic Sections
Centroid or Barycenter
Conditional Probability
Reflection
Interest Calculation