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探索三角形外角定理
Author:
Gideon Huang
1. 鍵入或拖曳角A的度數。 2. 拖曳B點和C點,試觀察規律。 3. 重複1~2,你發現什麼?
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柱體建築師
判斷球體
三位數除以一位數(二)
画直线等分三角形的面积
GeoGebra笔记功能体验课件
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反正切函數
仿生獸
ggb-fs-b1 分數擴分
folding paper by Mr LO WY
玖数小学数学(思维拓展)
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Right Triangles
Percentages
Plane Figures or Shapes
Addition
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