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GeoGebra
圖三
Author:
GeoGebra Institute of Hong Kong
Topic:
Circle
Related Topics
Area
Perimeter
Quadrilaterals
Special Points
Triangles
Discover Resources
Chords equidistant from centre are equal
Tangent of a Circle 圓的切線
北斗七星找北極星
複數指數函數：exp(z)
橢圓
Discover Topics
Functions
Vectors 3D (Three-Dimensional)
Arithmetic Operations
Hyberbola
Vectors
