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三角形四心
Author:
黃順福
GeoGebra
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第八周作业
椭圆内切圆链
第八周作业3
斐波那契螺旋弧线(表格法-可动态调节)
球体的截面
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公切線長度的計算
三角形與邊上一點求正三角形
圖一
練習
HKMO 2013 Question 3 Demonstration (Geometric Construction)
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Coordinates
Diagrams
Constructions
Area
Sphere