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关于椭圆的一个性质
Author:
孟宝兴
GeoGebra
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【案例】圆柱体内放置一个大球六个小球
兩組對邊相等和有直角的四邊形
柱體建築師
四邊形的特性
找出對稱軸
Discover Resources
碎形
仿生獸
音調與空氣柱
zentangle
高中物理电磁学·磁聚焦
Discover Topics
Differential Calculus
Confidence Interval
Division
Addition
Coordinates