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中华人民共和国国旗
Author:
孟宝兴
GeoGebra
New Resources
判斷球體
球體建築師
拼砌四邊形
四邉形 (四年級) 教師版
兩組對邊相等和有直角的四邊形
Discover Resources
圆锥曲线定义的拓展（卡西尼卵形线）
Mearm2
Quiz on Solving Right Triangles (Finding Angles) 解直角三角形：測驗2（求角度）
習題1.1 (P16) _ 2016.10.02
DSE Circle-ACT01C Distance between Chords and Centre of a Circle
Discover Topics
Polygons
Constructions
Fractions
Conditional Probability
Expected Value