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圆锥截面为圆椭圆双曲线抛物线的动画显示.许兴华数学
Author:
许兴华数学
Topic:
Cone
,
Conic Sections
GeoGebra
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柱體建築師
兩組對邊相等的四邊形
【案例】2018年全国1卷理科12题
錐體建築師
画直线等分三角形的面积
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