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優良作品2
Author:
Ching-Hui Chou
GeoGebra
New Resources
正方形雪花图案
撒针估算面积实验
平行線的斜率
斜率的值
第八周作业2
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認識GeoGebra--相似三角形
圓與切線
周界和面積
[洋葱] 给定面积找点(0057)
六上：圆的面积公式推导
Discover Topics
Standard Deviation
Frequency Distribution
Isosceles Triangles
Geometric Distribution
Confidence Interval