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動態文字2次函數
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日照、影長變換
日照与影长
频率分布直方图彩色
三角函數出題器2.0
同位角/内错角/同旁内角
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正餘弦函數的疊合102.11.27
circle
疊代四邊形
Fluid Dynamics in a Pipe
七巧板的副本
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Dilation
Circumcircle or Circumscribed Circle
LCM and GCD
Tangent Line or Tangent
Quadratic Equations
