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椭圆内部全等的双椭圆构造.许兴华数学
Author:
许兴华数学
Topic:
Conic Sections
GeoGebra
New Resources
拼砌四邊形
異分母分數減法
三位數除以一位數（二）
兩位數加法
【案例】2018年全国1卷理科12题
Discover Resources
四心的變化II
圓&五邊形
Parallel lines
Ex5C#8
連連看！橢圓在哪裡？
Discover Topics
Pythagoras or Pythagorean Theorem
Exponent
Circle
Natural Numbers
Addition