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内凹的正方形
Author:
叶明杰
GeoGebra
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第三周作业效果演示
斐波那契螺旋弧线(表格法)
第八周作业
比較五件物件的重量
异形操场
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沈老師等腰直角幾何題
整數÷整數_工作紙(一)_題5
task1
perimeter of rectangle
用交轨法求动点的轨迹方程图.许兴华数学
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Angles
Pyramid
Arithmetic Operations
Straight Lines
Histogram