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梯形堆垛
Author:
柳淳珈
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a sin(bx+c) + d 的圖形的副本
平面几何基础 命题4
毕氏螺线
未命名
勾股树123
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F.3 Q5 BQ
面積 題目1
No.15
平行四邊形堆垛
麻之葉
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Complex Numbers
Plane Figures or Shapes
Pyramid
Upper and Lower Sum or Riemann Sum
Subtraction