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周界
Author:
kpkong
,
spkwan
,
Tim Brzezinski
GeoGebra
GeoGebra
New Resources
球体的体积推导（优化版）
兩組對邊相等和有直角的四邊形
錐體建築師
兩位數加法
三位數除以一位數（二）
Discover Resources
類正五邊形摺法
正多边形内接迭代
題4
拼砌四邊形
椭圆内切圆链
Discover Topics
Optimization Problems
Linear Programming or Linear Optimization
Pie Chart or Circle Chart
Reflection
Logic