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四邊形內部反射_長寬角度可調整
Author:
boooooooyu
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
三位數除以一位數（二）
四邊形的特性
兩位數加法
找出對稱軸
Discover Resources
YH的GGB_BOOK
多項式函數
Three-phase electric power
多邊形陣列
F4_Ch9.1 任意角的三角比
Discover Topics
Equilateral Triangles
Circumcircle or Circumscribed Circle
Geometric Mean
Numbers
Tangent Function