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直线与椭圆
Author:
lidonglin
焦点到直线的距离之积为定值b方则直线与椭圆相切
GeoGebra
New Resources
四邊形的特性
兩組對邊相等和有直角的四邊形
画直线等分三角形的面积
找出對稱軸
三位數除以一位數（一）
Discover Resources
中點軌跡
Addition and Subtraction of Polynomials(多項式的加減法)
根據百分率找數量（一）: 例3的副本
The motion of a charged particle in an electric field带电粒子在加速电场和偏转电场中的运动
多动点运动
Discover Topics
Random Experiments
Addition
Rational Numbers
Cuboid
Similar Triangles