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封閉區域著色
Author:
侯杰材
GeoGebra
New Resources
GeoGebra笔记功能体验课件
四邊形的特性
【案例】2018年全国1卷理科12题
異分母分數減法
拼砌四邊形
Discover Resources
Positive angles & Negative angles
謝爾賓斯基三角形(Sierpinsky)
doto属性研究
軌跡圖
图形的旋转
Discover Topics
Congruence
Symmetry
Complex Numbers
Cosine
Rotation