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折扣 例4的副本
Author:
冯圣军
,
GeoGebra Institute of Hong Kong
GeoGebra
New Resources
撒针估算面积实验
折扣
三角函数 的副本
龙形曲线-分形龙2
活动三：应用性质
Discover Resources
艾雪鑲嵌2
Heat Sink Fin
四年級 最大公因數
somacube
正N边形在圆内的滚动
Discover Topics
General Quadrilateral
Vectors 3D (Three-Dimensional)
Quadrilaterals
Surface
Parallelogram