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同心圓
Author:
倪若雲
GeoGebra
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小数 的副本
柱體建築師
兩位數除以一位數（二）
【案例】2018年全国1卷理科12题
兩組對邊相等的四邊形
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有人要告白嗎?
angle between line and plane
畢氏定理證明(光華國中103資)
繪圖
碎形
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LCM and GCD
Cosine
Piecewise Functions
Plane Figures or Shapes
Surface