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符成岗
Author:
符成岗
GeoGebra
New Resources
近似值：有效數字
Earth with coastline
拼砌四邊形
四邊形的特性
兩組對邊相等和有直角的四邊形
Discover Resources
习题，任意三点不在同一直线上的等四个点，最多能作出几个三角形
HOMEWORK
二元一次方程式圖形
拋物線6--包絡線法
時距計算機
Discover Topics
Right Triangles
Dilation
Scalene Triangles
Unit Circle
Variance