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圓錐截痕模型
Author:
陳隆期
GeoGebra
New Resources
錐體建築師
画直线等分三角形的面积
兩位數除以一位數（二）
兩組對邊相等的四邊形
畫出對稱圖形
Discover Resources
loci car
Circle
柱體斜切
Copy of 費氏螺旋 (試算表)
尺规作图得到黄金三角形和黄金矩形
Discover Topics
Planes
Geometric Transformations
Logic
Orthocenter
Ratios