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九點圓
Author:
李詠甯
九點圓
GeoGebra
New Resources
兩組對邊相等的四邊形
兩位數除以一位數（二）
【案例】圆柱体内放置一个大球六个小球
球体的体积推导
【案例】2018年全国1卷理科12题
Discover Resources
Liu Hui's Method of Finding π
三度空間中的長方體
雙橢
盾牌~~~~
Golden Ratio (phi) Collection
Discover Topics
Cone
Circumcircle or Circumscribed Circle
Exponent
Curve Sketching
Probability