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GeoGebra
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認識角度
Author:
Cychoy
Topic:
Angles
GeoGebra
New Resources
球體建築師
畫出對稱圖形
兩位數除以一位數（二）
找出對稱軸
三位數除以一位數（二）
Discover Resources
已知橢圓 x^2/a^2+y^2/b^2=1 (a>b>0)
平行四邊形
八角柱(可側轉、上下轉)
Choose the most suitable 'improvised units'(中間人)
切割正八面體
Discover Topics
Polygons
Subtraction
General Quadrilateral
Square
Optimization Problems