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正n邊形內角與外角
Author:
李春培
Topic:
Angles
正n邊形內角與外角
GeoGebra
New Resources
画直线等分三角形的面积
兩組對邊相等的四邊形
三位數除以一位數（一）
【案例】2018年全国1卷理科12题
判斷球體
Discover Resources
Conic Sections
重心軌跡
小學
太极图
方程式(?)
Discover Topics
Step Functions
Means
Curve Sketching
Cone
Difference and Slope