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四邊形內部反射_長寬角度可調整
Author:
boooooooyu
GeoGebra
New Resources
錐體建築師
【案例】圆柱体内放置一个大球六个小球
兩位數除以一位數（二）
柱體建築師
兩組對邊相等和有直角的四邊形
Discover Resources
Cross sections of cube
Quiz on Addition and Subtraction of Directed Numbers (2) 有向數加減測驗(2)
線性組合3：正方形
找找看三角形外接圓的圓心在哪？
三角函數
Discover Topics
Conic Sections
Planes
Bar Chart or Bar Graph
Tree Diagrams
Power Functions