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保持2:3:4
Author:
hjyanghj
Topic:
Geometry
GeoGebra
New Resources
拼砌四邊形
錐體建築師
兩位數除以一位數（二）
近似值：有效數字
兩組對邊相等和有直角的四邊形
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高美濕地風車2
周界4B (1)
正12面體內的正四面體製作
椭圆的定义
螺旋正方形
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Tree Diagrams
Coordinates
Scalene Triangles
Random Experiments
Hypergeometric Distribution