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q5-9
Author:
johnmayhk
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
找出對稱軸
【案例】2013年安徽高考15题
拼砌四邊形
三位數除以一位數（一）
Discover Resources
Helicoid
parallelogram and squares
天干與地支
圓錐(可改底面圓半徑、錐體高)
test02
Discover Topics
Secant Line or Secant
Expected Value
Orthocenter
Angles
Subtraction