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Gazing Cow Problem (b)
Author:
Roger Lui
GeoGebra
New Resources
拼砌四邊形
兩組對邊相等和有直角的四邊形
兩位數除以一位數（二）
柱體建築師
球體建築師
Discover Resources
外角和
Demo
面鏡的反射
slopefield_spin
軌跡 拋物線 (與點及線等距)
Discover Topics
Histogram
Root
Tangent Function
Cosine
Tangent Line or Tangent