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Angle in Alternate Segment 3
Author:
H.K.Leung
GeoGebra
New Resources
柱體建築師
異分母分數減法
三位數除以一位數（二）
兩位數加法
【案例】2018年全国1卷理科12题
Discover Resources
HKJHGJHG
四邊形四個九點圓共點
How to draw a hexagon with ruler and compasses?
Dispersion
连续开方（制作：谢建华，修订：孟宝兴）
Discover Topics
Centroid or Barycenter
Continuity
Cone
Special Points
Trigonometry