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椭圆的光学性质
Author:
孟宝兴
GeoGebra
New Resources
【案例】2018年全国1卷理科12题
拼砌四邊形
柱體建築師
兩組對邊相等和有直角的四邊形
兩位數除以一位數（一）
Discover Resources
Trajectory of system: y'=sin(y)-y/2
圓的平移
謝爾冰司機-正方形
sinx & cscx
函数的旋转与翻折动画
Discover Topics
Geometric Distribution
Matrices
Kite
Trapezium
Multiplication