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F4_Ch9.1 任意角的三角比
Author:
Franky_0219
Topic:
Trigonometric Functions
GeoGebra
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錐體建築師
球體建築師
兩組對邊相等的四邊形
兩位數除以一位數（二）
四邊形的特性
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分數除法 1：a ÷ b（均分）
Section Curves
捷徑問題 2
(3D) Tasks: Pyramid, Paper folding & Solid of revolution[20170615]
勾股定理介绍及证明
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Similarity Transformation or Similarity
LCM and GCD
Solids or 3D Shapes
Centroid or Barycenter
Random Experiments