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橢圓規Ellipsograph (Trammel of Archimedes)
Author:
宋政蒲
Topic:
Constructions
,
Ellipse
GeoGebra
New Resources
兩位數加法
柱體建築師
畫出對稱圖形
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
Symmetric設計對稱圖案(一條對稱軸)
堆一堆222
二次函數圖形測驗
正弦函数图像的形成过程.许兴华数学
过一直线与已知直线相交
Discover Topics
Rotation
Real Numbers
Perimeter
Histogram
Logarithm