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operation of matrix
Author:
华杰 苏
Topic:
Matrices
GeoGebra
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找出對稱軸
柱體建築師
球体的体积推导（优化版）
画直线等分三角形的面积
兩組對邊相等的四邊形
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比例
二元一次方程式 1
How to draw a heptagon with ruler andcomp…
圓錐曲線篇
Rectangle
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Function Graph
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Trigonometry
Histogram