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圆与它的圆
Author:
陈坚昌
GeoGebra
New Resources
第八周作业
平行線的判定
盈利與虧蝕
百分數及其應用
比較五件物件的重量
Discover Resources
七巧板
圓錐截橫
平面幾何的思考
分項對消式的寫法的副本
圖三 的複本
Discover Topics
Tangent Function
Isosceles Triangles
Line Segment
Sequences and Series
Vectors 2D (Two-Dimensional)