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錯角---不平行綫
Author:
chanfushun
GeoGebra
New Resources
兩位數加法
兩組對邊相等和有直角的四邊形
【案例】2018年全国1卷理科12题
拼砌四邊形
找出對稱軸
Discover Resources
橢圓動畫
相似形應用_進階_Collection
纏繞SEQUENCE任意多邊版
找规律(数阵与点阵)
ω的影响