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GeoGebra
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GeoGebra
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3-6-14
Author:
Tzuen Hsu
GeoGebra
New Resources
拼砌四邊形
畫出對稱圖形
兩位數加法
三位數除以一位數（一）
柱體建築師
Discover Resources
色彩視覺藝術：三色彩帶
三角形重心軌跡(動點在三圓上)
CircleRoundCircle
任何三角形內角和180度(五上數翰４－２)
星形线-Astroid Curve-with-Envelope Command
Discover Topics
Pyramid
Statistics
Set Theory
Statistical Characteristics
Incircle or Inscribed Circle