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兩弦的長度比較
Author:
luke huang
GeoGebra
New Resources
三位數除以一位數（二）
兩組對邊相等和有直角的四邊形
算柱 (兩位數)
兩位數加法
柱體建築師
Discover Resources
線型函數
任意三角形兩不等圓v3
量角器
单晨答空间曲面
分数应用题——巧分烧饼
Discover Topics
Random Variables
Congruence
Incircle or Inscribed Circle
Root
Plane Figures or Shapes