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中国节灯笼
Author:
孟宝兴
GeoGebra
New Resources
拼砌四邊形
兩位數加法
兩組對邊相等的四邊形
算柱 (兩位數)
【案例】2013年安徽高考15题
Discover Resources
椭圆的定义
證明
clock
Copy of 劉徽的「割圓術」
Copy of 分數與小數
Discover Topics
Equilateral Triangles
Vectors
Trapezoid
Real Numbers
Set Theory