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平行4
Author:
Hui Sir
GeoGebra
New Resources
画直线等分三角形的面积
【案例】圆柱体内放置一个大球六个小球
兩組對邊相等和有直角的四邊形
柱體建築師
兩位數除以一位數（二）
Discover Resources
Parallelogram 02
單向函數
蜘蛛網
两角和的余弦公式几何证明
正方體展開(動畫脫鉤).ggb
Discover Topics
Similar Triangles
Secant Line or Secant
Scalene Triangles
Trapezoid
Parametric Curves