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三圓外切
Author:
鍾元杰
三圓外切
GeoGebra
三圓外切
New Resources
兩位數除以一位數（一）
兩組對邊相等和有直角的四邊形
画直线等分三角形的面积
球體建築師
兩位數加法
Discover Resources
線性規劃
S5 Permutation and Combination
量詞
百分數化分數
GeoGebra成像规律的演示
Discover Topics
Fractal Geometry
Arithmetic
Kite
Sine
Calculus