😃5.1 空間直角坐標系

https://www.geogebra.org/m/hfF48zqX#material/s5MCkZzv

空間中的點 https://www.geogebra.org/m/rA4fWtKH​

平面https://www.geogebra.org/m/v8twvzzu​

​https://www.geogebra.org/m/Nkfvvjx6​

空間中的點 https://www.geogebra.org/m/e5zueuec​

圓與球面 https://www.geogebra.org/m/SQeMqBrM​

圓與平面https://www.geogebra.org/m/mjvwCy4c​

圓與平面 https://www.geogebra.org/m/d3b4hvcg​

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