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World's Second-Hardest Easy Geometry Problem
Author:
Terry Chau
Topic:
Geometry
幾何老題2
GeoGebra
New Resources
兩位數加法
畫出對稱圖形
異分母分數減法
四邉形 (四年級) 教師版
錐體建築師
Discover Resources
鏡射再旋轉
線性變換矩陣（二階）
Apollonius Problem kissing coin problem
橫向橢圓
線性組合的副本
Discover Topics
LCM and GCD
Correlation
Multiplication
Natural Numbers
Equations