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T4 Geobra
Author:
Argon
T4
GeoGebra
New Resources
【案例】2018年全国1卷理科12题
三位數除以一位數（一）
【案例】2013年安徽高考15题
判斷球體
四邊形的特性
Discover Resources
Equal chords cut off equal arcs in a circle
p9pppppppppppppppp
正弦公式(證明)
頂點法
拋物線5--包絡線法
Discover Topics
Ellipse
Probability
Cone
Cube
Circumcircle or Circumscribed Circle