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动圆与两(相离)圆外切
Author:
蔡永志
动圆与两(相离)圆外切
GeoGebra
New Resources
四邊形的特性
Nested spiral octagon
近似值：有效數字
Earth with coastline
小数 的副本
Discover Resources
物體的體積
Distributive Law of Multiplication 2 (乘法的分配率 2)
正方体展开图的副本
拋物線6--包絡線法
基础知识
Discover Topics
Multiplication
General Quadrilateral
Mathematics
Diagrams
Area