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dragon(龙)
Author:
赵林
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
柱體建築師
異分母分數減法
四邉形 (四年級) 教師版
判斷球體
Discover Resources
空間中的平面
tool
GeoGebra研習作品
內心
用平面截圆锥
Discover Topics
Geometry
Scatter Plot
Incircle or Inscribed Circle
Special Points
Orthocenter