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平面截圆锥
Author:
冯伟冀
Topic:
Conic Sections
GeoGebra
New Resources
錐體建築師
球体的体积推导（优化版）
三位數除以一位數（一）
找出對稱軸
柱體建築師
Discover Resources
風車
三角形內部一點到三頂點距離和最小
GGB6
鸚鵡螺旋線
伽利略比值II (Alfinio Flores & Hugh A. Sanders)
Discover Topics
Similar Triangles
Sphere
Fractions
Planes
Random Variables