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圆在多边形上滚动
Author:
GeoGebra Institute of WuXi
GeoGebra
New Resources
判斷球體
拼砌四邊形
四邉形 (四年級) 教師版
Earth with coastline
Fibonacci Clock
Discover Resources
「相似三角形」任务4
square and circle
Copy of 十字交乘法
Illusion-外凸的正方形
翰林數學_2下_CH3-1_多邊形的內角和
Discover Topics
Mode
Line Segment
Confidence Interval
Derivative
Percentages