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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
判斷球體
【案例】圆柱体内放置一个大球六个小球
兩組對邊相等和有直角的四邊形
拼砌四邊形
三位數除以一位數(二)
Discover Resources
直線之美
斜率與y截距
製作對稱圖形-釘板-LEVEL 1
拋物線
异形操场
Discover Topics
Translation
Conic Sections
Sphere
Cuboid
Integral Calculus