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任務2的副本
Author:
童话
,
gklwong
三角形
GeoGebra
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多邊形的面積
平行線的斜率
撒针估算面积实验
垂直線的斜率
平行線的判定
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樞紐問題
曲柄滑塊模擬
Number of solutions of two straight lines
Addition and Subtraction of Polynomials 2 (多項式的加減法2)
廣義角的副本
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Derivative
Conditional Probability
Linear Equations
Hyperbola
Pyramid