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22题宋祥问
Author:
万超杰
GeoGebra
New Resources
空间中两直线的位置关系
垂直線的斜率
球体的体积推导（优化版）
圓的切線方程
常见四边形是否是双心四边形
Discover Resources
正三角形的旋轉
BEES定理2
三角函數-sin
極座標雷達
Fractal
Discover Topics
Polynomial Functions
Solids or 3D Shapes
Piecewise Functions
Perimeter
Line Segment