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圆锥的侧面展开图3D动画的副本
Author:
吉顺国
拖动点C
圆锥的侧面展开图是三角形吗?
New Resources
球體建築師
【案例】2018年全国1卷理科12题
兩組對邊相等的四邊形
判斷球體
拼砌四邊形
Discover Resources
限制函數或曲線顯示的範圍
PMC 2014-15 Q2
蝴蝶定理推廣證明1
拋物線3--平行四邊形法
正态函数曲线的特点
Discover Topics
Histogram
Bar Chart or Bar Graph
Diagrams
Centroid or Barycenter
Derivative