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动态平衡-相似三角形例1
Author:
苏岭
GeoGebra
New Resources
球體建築師
三位數除以一位數（二）
柱體建築師
兩位數除以一位數（一）
兩組對邊相等和有直角的四邊形
Discover Resources
台北松菸巨蛋談判工作表
Copy of 題 5
塗色03
Orthocentre
拖拉小正方体
Discover Topics
Piecewise Functions
Constructions
Tangent Line or Tangent
Real Numbers
Rectangle