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時鐘問題
Author:
連琨銘
GeoGebra
New Resources
活动三:应用性质
龙形曲线-分形龙
百分數及其應用
撒针估算面积实验
斐波那契螺旋弧线(表格法)
Discover Resources
周界
兩圓
滑桿2-3
solid of revolution
四面体棱锥外接球
Discover Topics
Geometric Mean
Line Segment
Arithmetic
Cone
Cuboid