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垂心問題
Author:
連琨銘
GeoGebra
New Resources
四邉形 (四年級) 教師版
拼砌四邊形
四邊形的特性
【案例】圆柱体内放置一个大球六个小球
兩位數除以一位數（一）
Discover Resources
內擺線
Apollonius Problem gergonne 4
跳舞的六角形
圆在多边形上滚动
第一次尝试
Discover Topics
Logic
Arithmetic Operations
Frequency Distribution
Parabola
Circumcircle or Circumscribed Circle