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第7题
Author:
zhuguokang
GeoGebra
New Resources
【案例】2018年全国1卷理科12题
画直线等分三角形的面积
三位數除以一位數（一）
兩組對邊相等的四邊形
拼砌四邊形
Discover Resources
sweet sugar
密鋪圖形
Centroid
禪繞畫
椭圆的中点弦的轨迹.许兴华数学
Discover Topics
Natural Numbers
Vectors 2D (Two-Dimensional)
Quadratic Equations
Piecewise Functions
Upper and Lower Sum or Riemann Sum