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几何与勾股定理
Author:
叶明杰
GeoGebra
New Resources
漂亮的摇摆曲线
球体的体积推导（优化版）
圓周公式的應用
第八周作业
讀磅
Discover Resources
KidEdu
模擬「分頁」效果
直角坐標變換：測驗(ALEX CHIK)
三角函數的由來
二階行列式-平行四邊形的面積
Discover Topics
Reflection
Sphere
Random Experiments
Median Line
General Quadrilateral