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Pole & Polar
Author:
Wu Xiao-Ren
GeoGebra
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直角坐標平面上的旋轉變換
兩組對邊相等的四邊形
画直线等分三角形的面积
兩位數除以一位數（二）
【案例】2018年全国1卷理科12题
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Quiz on the N-th Term of a Sequence 數列的第n項：測驗
y=2^x
Ex (RHS)
Copy of Quiz on Solving Quadratic Inequalities 解二次不等式：測驗
S408 Penrose 階梯
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Unit Circle
Normal Distribution
Tangent Line or Tangent
Root
Ellipse