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相似三角形證明
Author:
蔡孟達
GeoGebra
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三位數除以一位數(一)
拼砌四邊形
判斷球體
【案例】2013年安徽高考15题
球体的体积推导(优化版)
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推移(x 方向)
橢圓的定義畫圖
Copy of 方格紙上畫四邊形
斜坐標
圖形的周界
Discover Topics
Logarithm
Arithmetic Operations
General Quadrilateral
Matrices
Variance