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Drawing quadrilaterals on the grid or the pinboard
Author:
Anthony OR 柯志明
GeoGebra
New Resources
球体的体积推导
【案例】2013年安徽高考15题
画直线等分三角形的面积
空间中两直线的位置关系
漂亮的摇摆曲线
Discover Resources
testing
Locus (Two points 2)
仙后座找北極星 (底稿)
平行四邊形堆垛
抛物线动态（不一样的做法）
Discover Topics
Sphere
Similar Triangles
Derivative
Scatter Plot
Straight Lines