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(幾何性質, 橢圓 (定義, 1.焦點在X軸時，標準方程為：, 焦點在Y軸時，標準方程為：), 拋物線, 雙曲線, 頂點在圓點的拋物線標準式,…

- - - - r^{2}=a^{2}\sec20
    - - {\displaystyle r^{2}=a^{2}\csc {2}\theta }
    - - {\displaystyle r^{2}=-a^{2}\sec {2}\theta }
    - - {\displaystyle r^{2}=-a^{2}\csc {2}\theta }