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重心 內心 外心 垂心
Author:
26黃國修
GeoGebra
New Resources
折扣
百分數及其應用
斐波那契螺旋弧线(表格法-可动态调节)
平行線的判定
正方形雪花图案
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立體圖形-截面
三角函數
四角柱算體積(可以切開)
locus wrt two pts on two indep. circle
Copy of 圓周公式應用題1
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Pyramid
Similar Triangles
Multiplication
Secant Line or Secant
Piecewise Functions