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椭圆内切圆链
Author:
孟宝兴
GeoGebra
New Resources
第八周作业
畫出對稱圖形
兩組對邊相等和有直角的四邊形
兩位數除以一位數（二）
拼砌四邊形
Discover Resources
旋轉一物件
moon1
線性規劃(半平面)
江苏省职校数学网络资源
活工(二)Q3
Discover Topics
Natural Numbers
Differential Equation
Matrices
Ratios
Median Line