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World's Second-Hardest Easy Geometry Problem
Author:
Terry Chau
Topic:
Geometry
幾何老題2
GeoGebra
New Resources
画直线等分三角形的面积
異分母分數減法
三位數除以一位數（一）
算柱 (兩位數)
兩組對邊相等的四邊形
Discover Resources
環形面積
正5角錐
正圆柱展开图-方式二
等比数列计算练习
三角形三边关系探究
Discover Topics
Differential Calculus
Mode
Linear Regression
Plane Figures or Shapes
Congruence