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科赫雪花
Author:
孟宝兴
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
兩組對邊相等的四邊形
画直线等分三角形的面积
第八周作业
異分母分數減法
Discover Resources
圓面積計算
表示數線上的位置
平移法（四）
Copy of 分數比較
Interesting Geometric Theorem
Discover Topics
Difference and Slope
Geometric Transformations
Translation
Curve Sketching
Quadratic Equations