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平面正方型碎形
Author:
余泰欣
GeoGebra
New Resources
畫出對稱圖形
【案例】圆柱体内放置一个大球六个小球
画直线等分三角形的面积
異分母分數減法
兩位數除以一位數（二）
Discover Resources
np2c
階梯立方體
時鐘問題
Heat Sink Fin
F5__二元一次不等式
Discover Topics
Intersection
Secant Line or Secant
Real Numbers
Prism
Vectors