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圓內的光反射
Author:
王政凱
GeoGebra
New Resources
sanjiaohanshu
找出對稱軸
算柱 (兩位數)
近似值：有效數字
Earth with coastline
Discover Resources
七巧板奔人3
Triangle Inequalities
兩線段和圓3
erwtewt的副本
繪畫平行四邊形
Discover Topics
Incircle or Inscribed Circle
Geometric Transformations
Intersection
Straight Lines
Random Variables