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直角三角形斜邊上的高
Author:
鍾文欽
GeoGebra
New Resources
兩位數除以一位數（一）
拼砌四邊形
判斷球體
三位數除以一位數（一）
球体的体积推导
Discover Resources
「分點」平行四邊形
rectangle construction
圆锥曲线包络
折一半
軌跡練習1
Discover Topics
Geometry
Frequency Distribution
Parabola
Area
Incircle or Inscribed Circle