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Author:
许业成
GeoGebra
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科赫雪花
椭圆内切圆链
第八周作业3
第八周作业1
GeoGebra数学资源(4-8年级)
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Liu Hui's Method of Finding π
天水圍循道衛理小學 GeoGebra 幾何創作室 第 3 節
(3D) Tasks: Pyramid, Paper folding & Solid of revolution[20170615]
椭圆中的对称斜率为定值问题20190917
手拉手模型
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Area
Integers
Fractions
Means
Polygons