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希瓦定理
Author:
王禹博
GeoGebra
New Resources
画直线等分三角形的面积
兩位數除以一位數（一）
拼砌四邊形
找出對稱軸
兩位數除以一位數（二）
Discover Resources
畢氏定理動態證明(四塊直角三角形移動)
Exploring the changes in mean and median
工作天時
黄金螺线
作業1:內心
Discover Topics
Cuboid
Expected Value
Pythagoras or Pythagorean Theorem
Frequency Distribution
Matrices