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同心圓+等分割線
Author:
許清惟
GeoGebra
New Resources
兩組對邊相等的四邊形
GeoGebra笔记功能体验课件
柱體建築師
第八周作业
兩位數除以一位數（一）
Discover Resources
圓周
弦切角是圓心角的一半
glt-c02-02 四角柱旋轉
Similar triangles reasons
Question 4
Discover Topics
Secant Line or Secant
Numbers
Polygons
Parallelogram
Integral Calculus