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凹透镜
Author:
myao1999
GeoGebra
New Resources
漂亮的摇摆曲线
圓的切線方程
常见四边形是否是双心四边形
球体的体积推导（优化版）
直線的斜率：水平變化 & 鉛垂變化
Discover Resources
多項式函數
Angle between 2 planes
同心圓
伍四红 圆与正方形 面积同周长比较
柱面
Discover Topics
Geometric Mean
Function Graph
Tangent Function
Polygons
Terms