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椭圆的定义
Author:
jscqiong2006
Topic:
Ellipse
GeoGebra
New Resources
球體建築師
異分母分數減法
第八周作业
兩位數除以一位數（一）
四邊形的特性
Discover Resources
斜率 - 概念及定義 (2)
Angles between 2 planes
Section Curves (2)
立體圖
正方體的旋轉對稱
Discover Topics
Differential Calculus
Sphere
Parametric Curves
Indefinite Integral
Trapezoid