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radius of the earth 1
Author:
kidmancmw
GeoGebra
New Resources
龙形曲线-分形龙
科赫雪花
常见四边形是否是双心四边形
活动三：应用性质
撒针估算面积实验
Discover Resources
整數的減法
正弦定理的证明
拿破侖定理(外拿破侖)證明二
旁心
擲兩個硬幣的機率分布的副本
Discover Topics
Rhombus
Isosceles Triangles
Coordinates
Polynomial Functions
Piecewise Functions