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封閉區域著色
Author:
Ching-Hui Chou
GeoGebra
New Resources
兩位數除以一位數（一）
【案例】2013年安徽高考15题
畫出對稱圖形
柱體建築師
【案例】2018年全国1卷理科12题
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龍騰4_1-1課例5
對稱方波
算幾不等式
How to draw a triangle with ruler and compasses?
活工(一)Q2
Discover Topics
Secant Line or Secant
Circle
Optimization Problems
Parallelogram
Parametric Curves