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椭圆的一种画法.许兴华数学
Author:
许兴华数学
Topic:
Conic Sections
,
Ellipse
GeoGebra
New Resources
三位數除以一位數（一）
GeoGebra笔记功能体验课件
兩位數除以一位數（一）
異分母分數減法
柱體建築師
Discover Resources
Angle between Lateral Faces 1
第二次:20190110
拋物線的光線反射 獻給聰哥
橢圓2-四圓心近似法
橢圓規Ellipsograph (Trammel of Archimedes)
Discover Topics
Sphere
Boxplot
Angles
Constructions
Parallelogram