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three circle touching each other
Author:
Huang
three circle touching each other
GeoGebra
New Resources
錐體建築師
兩組對邊相等的四邊形
四邊形的特性
球體建築師
【案例】2018年全国1卷理科12题
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交點的極限
Copy of 長方形與正方形的面積
二次函数的图像
仙后座找北極星 (底稿)
相似三角形的构造01.许兴华数学
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Difference and Slope
Congruence
Parabola
Correlation
Logarithm