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利用对称求线段和最值
Author:
梁航宇
GeoGebra
New Resources
四邊形的特性
柱體建築師
找出對稱軸
三位數除以一位數（一）
拼砌四邊形
Discover Resources
三角錐體的截面
Quiz on Addition and Subtraction of Directed Numbers (2) 有向數加減測驗(2)
同心圓+等分割線
hihihi
工作紙(1) 思考題
Discover Topics
Equilateral Triangles
Optimization Problems
Conic Sections
Parabola
Matrices