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平移多邊形周界
Author:
lai fung yee
GeoGebra
New Resources
柱體建築師
找出對稱軸
三位數除以一位數（二）
三位數除以一位數（一）
GeoGebra笔记功能体验课件
Discover Resources
Decimal
Conic section
等腰三角形
Similar triangles in a triangle
拋物線3-平行四邊形法
Discover Topics
Optimization Problems
Conditional Probability
Trigonometry
Parabola
Calculus