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Author:
bigbirdjack
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兩位數加法
找出對稱軸
判斷球體
直角坐標平面上的旋轉變換
異分母分數減法
Discover Resources
橢圓軌跡加滑桿
congruent (SA)
test02
数学之美
（三）观察物体
Discover Topics
Parallelogram
Sphere
Centroid or Barycenter
Secant Line or Secant
Calculus