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World's Second-Hardest Easy Geometry Problem
Author:
Terry Chau
Topic:
Geometry
幾何老題2
GeoGebra
New Resources
兩組對邊相等的四邊形
兩位數除以一位數（二）
異分母分數減法
找出對稱軸
GeoGebra笔记功能体验课件
Discover Resources
複數
直線與圓的位置關係
Direct Variation (Different powers of x)
拼貼動畫
正四面體變菱形12面體
Discover Topics
Set Theory
Median Line
Matrices
Line Segment
Normal Distribution