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兩圓內外公切線
Author:
梅
GeoGebra
New Resources
算柱 (兩位數)
柱體建築師
三位數除以一位數（二）
兩組對邊相等和有直角的四邊形
畫出對稱圖形
Discover Resources
Lagrange
[問題] 橢圓兩焦點 (6,0), (0,8)
交錯弓形的圓周角
橢圓2-四圓心近似法
三角形的构成的副本
Discover Topics
Parallelogram
Curve Sketching
Step Functions
Statistical Characteristics
Normal Distribution