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椭圆画法1--参数方程法
Author:
冯伟冀
GeoGebra
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【案例】2013年安徽高考15题
【案例】圆柱体内放置一个大球六个小球
拼砌四邊形
兩組對邊相等的四邊形
兩組對邊相等和有直角的四邊形
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黎曼和
我的傑作
固定周界長方形的面積變化(三)
随机三角形背景
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Triangles
Parabola
Division
Addition
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