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教学素材：圆锥曲线极坐标方程
Author:
清风拂琴，陌上花开
GeoGebra
New Resources
三位數除以一位數（一）
兩組對邊相等和有直角的四邊形
拼砌四邊形
【案例】圆柱体内放置一个大球六个小球
柱體建築師
Discover Resources
三角形內切三圓
三角函數
导数
讀磅
立面化設計
Discover Topics
Linear Equations
Scatter Plot
Area
Distributions
Random Variables