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優良作品2
Author:
Ching-Hui Chou
GeoGebra
New Resources
四邉形 (四年級) 教師版
近似值：有效數字
兩組對邊相等和有直角的四邊形
第八周作业
Earth with coastline
Discover Resources
優良作品4(楚耘)
正五角椎
拋物線5--包絡線法
y=-3x+6(x>=3)
GeoGebra 動畫開關按鈕製作的副本
Discover Topics
Optimization Problems
Linear Regression
Angles
Isosceles Triangles
Kite