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Angle
作者：
pduggan
Basic example of an angle between two lines.
GeoGebra
最新資源
繪畫垂直線
Function Art 3D - Flower
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Quadrant Illustrator 2
挂谷问题——三尖瓣形
探索資源
Exploring Quadratics
Eratosthenes w/Shadows
Medial Triangle
Parallelogram Properties
Lines in Parametric Form
探索主題
線性規劃或線性最佳化
Pythagoras or Pythagorean Theorem
菱形
正切線或正切
3D 向量（三維）