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椭圆画法1--参数方程法
Author:
冯伟冀
GeoGebra
New Resources
兩位數加法
拼砌四邊形
異分母分數減法
畫出對稱圖形
三位數除以一位數（一）
Discover Resources
Locus
畢氏定理(面積平移)
拋物線四-平行四邊形法
正四面體變菱形12面體
圆柱展开成平行四边形2
Discover Topics
Straight Lines
Geometry
Pie Chart or Circle Chart
Mode
Square