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圆外一点做圆的切线
Author:
周琪博
GeoGebra
New Resources
柱體建築師
兩位數加法
兩位數除以一位數（二）
【案例】圆柱体内放置一个大球六个小球
第八周作业
Discover Resources
風車2
層層出現的圓
畫三角形 題2e
整數或分數÷分數_ 工作紙（一）_題3c
圖形周界_F
Discover Topics
Similar Triangles
Hypothesis Testing
Means
Pythagoras or Pythagorean Theorem
Fractal Geometry