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試算表應用
Author:
rachmaninoff
GeoGebra
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四邊形的特性
【案例】2013年安徽高考15题
兩組對邊相等的四邊形
判斷球體
柱體建築師
Discover Resources
張春興0302
兩圓外公切線
S3 Trigonometry
軌跡 直線 (與兩平行線等距)
廣義三角：sin, cos
Discover Topics
Square
Congruence
Piecewise Functions
Quadrilaterals
Circumcircle or Circumscribed Circle