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銳角三角：sin, cos
Author:
羅驥韡 (Pegasus Roe)
GeoGebra
New Resources
四邉形 (四年級) 教師版
GeoGebra笔记功能体验课件
三位數除以一位數（一）
第八周作业
画直线等分三角形的面积
Discover Resources
testing book
大小相同串珠
對稱01
拋物線2-焦點法
畢氏定理的副本
Discover Topics
Geometric Transformations
Algebra
Parabola
Surface
Division