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旋转直角
Author:
wobbly
GeoGebra
New Resources
直角坐標平面上的旋轉變換
畫出對稱圖形
兩位數除以一位數（二）
球體建築師
兩組對邊相等的四邊形
Discover Resources
橢圓
正立方體->菱形十二面體(滑桿動畫)
Light reflected in hyperbola
热带风暴storm
连杆
Discover Topics
Bar Chart or Bar Graph
Normal Distribution
Indefinite Integral
Combinatorics
Real Numbers