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ptcc trigo level 2
Author:
Cheung Wing Chuen
GeoGebra
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算柱 (兩位數)
【案例】2013年安徽高考15题
柱體建築師
【案例】圆柱体内放置一个大球六个小球
兩組對邊相等的四邊形
Discover Resources
我的第一個GGB動畫
sine graph 變換
Brahmagupta 四邊形的構造方法
雙曲線的漸進線2
百分數：折扣 / 賺賠
Discover Topics
Complex Numbers
Inequalities
Incircle or Inscribed Circle
Sphere
Optimization Problems