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电场线模拟
Author:
陈辉
GeoGebra
New Resources
畫出對稱圖形
找出對稱軸
算柱 (兩位數)
GeoGebra笔记功能体验课件
三位數除以一位數（一）
Discover Resources
[問題] 橢圓與雙曲線有共同焦點
異分母分數加減
圓柱(可改底面圓半徑、柱高)
中考数学16讲
剪切成正三棱柱（制作：李三军，修订：孟宝兴）
Discover Topics
Parabola
Optimization Problems
Real Numbers
Scalene Triangles
Vectors 3D (Three-Dimensional)