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希瓦定理
Author:
張丰耘
GeoGebra
New Resources
判斷球體
兩組對邊相等的四邊形
四邊形的特性
【案例】圆柱体内放置一个大球六个小球
球体的体积推导（优化版）
Discover Resources
HKJHGJHG
圖H
二元一次方程式圖形
Epicycloid
可控坐标系
Discover Topics
Perimeter
Isosceles Triangles
Linear Regression
Pythagoras or Pythagorean Theorem
Piecewise Functions