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垂徑定理
Author:
eyun306
GeoGebra
New Resources
多邊形的面積
祖冲之的期望：内棋与外棋
常见四边形是否是双心四边形
漂亮的摇摆曲线
圓的切線方程
Discover Resources
簡單的回饋「笑臉」與「哭臉」
angle between line and plane
優良作品1(昀潔)
線的面化
geogebra和初中数学课程深度融合
Discover Topics
Orthocenter
Coordinates
Function Graph
Linear Programming or Linear Optimization
Square