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圓內接四邊形任務一: 提示二
Author:
Stanley Mak
GeoGebra
New Resources
柱體建築師
錐體建築師
兩位數除以一位數（二）
画直线等分三角形的面积
【案例】圆柱体内放置一个大球六个小球
Discover Resources
證平行四邊形 (對角相等)
Shoot Game
切线
弦的垂直線何時平分弦活動?
两个等腰三角形
Discover Topics
Planes
Tree Diagrams
Inequalities
Cone
Set Theory