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椭圆的定义
Author:
guomenglin
Topic:
Ellipse
GeoGebra
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【案例】2013年安徽高考15题
找出對稱軸
判斷球體
第八周作业
三位數除以一位數（二）
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AREA
ex 5
一點在圓上跑一點在三角形上跑兩點中點軌跡
探究平行四邊形面積(2)
高尔顿钉板实验
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Interest Calculation
Fractal Geometry
Terms
Right Triangles
Arithmetic