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歡迎您訪問每日一練:直線l上有一點到圓心O的距離等于⊙O的半徑,則直線!

每日一練:直線l上有一點到圓心O的距離等于⊙O的半徑,則直線

更新時間:2024-01-12 12:53:07作者:貝語網校

直線l上有一點到圓心O的距離等于⊙O的半徑,則直線l與⊙O的位置關系是

A.相離

B.相切

C.相切或相交

D.相交

試題答案

C

若直線上一點到圓心的距離等于圓的半徑,則圓心到直線的距離等于或小于圓的半徑,此時直線和圓相交或相切.

∵圓心到直線的距離等于或小于圓的半徑,

∴直線和圓相交或相切.

故選C.

注意:直線上一點到圓心的距離不一定是圓心到直線的距離

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