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Pappus Chain
Author:
李俊儀
GeoGebra
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画直线等分三角形的面积
拼砌四邊形
判斷球體
畫出對稱圖形
找出對稱軸
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正三角形內一點P, 到三頂點距3,4,5
同心圓
一位数加减法运算自我测评
圓外切四邊形
翰林數學_2下_CH3-1_三角形的內角與外角
Discover Topics
Natural Numbers
Variance
Multiplication
Definite Integral
General Quadrilateral