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孟氏定理 (Menelaus' theorem)
Author:
羅驥韡 (Pegasus Roe)
GeoGebra
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兩組對邊相等的四邊形
拼砌四邊形
三位數除以一位數（一）
畫出對稱圖形
【案例】2013年安徽高考15题
Discover Resources
conjugate
分數與小數
ycmc P5 Math lesson 1-3
畢氏定理-切割法
拋物線2-焦點法
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Addition
Cylinder
Histogram
Linear Equations
Parabola