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教学素材：直线与圆的标准方程及其参数方程
Author:
清风拂琴，陌上花开
GeoGebra
New Resources
比較五件物件的重量
第八周作业
常见四边形是否是双心四边形
正方形雪花图案
平行線的判定
Discover Resources
waaachen
正方形的旋轉2
S3 Polynomials
test
椭圆中的对称斜率为定值问题20190917
Discover Topics
Polynomial Functions
Geometry
Upper and Lower Sum or Riemann Sum
Subtraction
Triangles