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中考2019北京—24
Author:
宋晓燕
GeoGebra
New Resources
柱體建築師
兩位數加法
球體建築師
直角坐標平面上的旋轉變換
兩位數除以一位數（二）
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卡特蘭數 (Catalan Number)
angles sum of a triangle 3
正切函數 y=Tan(x)
堆疊正立方體的副本
S6G7三视图
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Quadrilaterals
Curve Sketching
Similar Triangles
Numbers
Plane Figures or Shapes