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轨迹19
Author:
万超杰
GeoGebra
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【案例】2018年全国1卷理科12题
兩組對邊相等和有直角的四邊形
判斷球體
【案例】2013年安徽高考15题
直角坐標平面上的旋轉變換
Discover Resources
Addition and Subtraction of Directed Numbers (1) 有向數加減(1)
quadrilaterals 1
直線排列 2
小棒
函数作图工具的副本
Discover Topics
Triangles
Fractal Geometry
Calculus
Quadrilaterals
Perimeter