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Elementary school math
Author:
呂宗錡
Drag E and F to rotate the rectangle RSTU.
GeoGebra
New Resources
畫出對稱圖形
找出對稱軸
兩組對邊相等和有直角的四邊形
四邉形 (四年級) 教師版
算柱 (兩位數)
Discover Resources
柱體
Statistics (M1)
對數函數1
椭圆的定义
酷炫
Discover Topics
Derivative
Hyperbola
Real Numbers
Differential Equation
Right Triangles