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Triangle_4_Q
Author:
ralphchen
GeoGebra
New Resources
撒针估算面积实验
常见四边形是否是双心四边形
直線的斜率：水平變化 & 鉛垂變化
圓的基本性質
盈利與虧蝕
Discover Resources
Probability(概率）
Perimeter
Angle of elevation and Angle of depression(仰角和俯角)
線的面化
直线和圆的位置关系
Discover Topics
Polynomial Functions
Distributions
Plane Figures or Shapes
Angles
Centroid or Barycenter