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原子筆的長度
Author:
GeoGebra Institute of Hong Kong
GeoGebra
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圓的切線方程
直線的斜率
圓周公式的應用
常见四边形是否是双心四边形
三角函数 的副本
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空間貝氏曲線
數學傳播39卷4期, 平面幾何公式思考
Example 4
test000
Copy of Linear Transformations
Discover Topics
Parallelogram
Frequency Distribution
Indefinite Integral
Matrices
Congruence