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Rotation in the Coordinate Plane
Author:
Ngan Hok Hei
Rotation
GeoGebra
New Resources
兩位數除以一位數（一）
四邉形 (四年級) 教師版
畫出對稱圖形
【案例】2018年全国1卷理科12题
拼砌四邊形
Discover Resources
直角三角形的三角比
Travel Graph (Two Bodies) 行程圖 (雙物體)
加減併式與估算
雙曲線1 交點法
以多維度解釋標準差
Discover Topics
Combinatorics
Mathematics
Mode
Median Value
Arithmetic Operations