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Circumference 圓周
Author:
Alex CHIK
GeoGebra
GeoGebra 互動數學教室
http://www.geogebra.hk
New Resources
拼砌四邊形
兩組對邊相等和有直角的四邊形
判斷球體
【案例】2013年安徽高考15题
【案例】圆柱体内放置一个大球六个小球
Discover Resources
如何判斷球體
折一半
qqqqqqqqqq
旁心
椭圆的离心率
Discover Topics
Straight Lines
LCM and GCD
Normal Distribution
Median Line
Random Experiments