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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
三位數除以一位數（二）
柱體建築師
算柱 (兩位數)
兩組對邊相等的四邊形
錐體建築師
Discover Resources
lms2702
三節棍
國旗
EX11圖形7
圖形的周界
Discover Topics
Natural Numbers
Pythagoras or Pythagorean Theorem
Orthocenter
Logarithmic Functions
Normal Distribution