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歡迎您訪問數學考題練習:已知點A,B,且AB<4,畫經過A,B兩點且半!

數學考題練習:已知點A,B,且AB<4,畫經過A,B兩點且半

更新時間:2024-01-12 16:28:32作者:貝語網校

已知點A,B,且AB<4,畫經過A,B兩點且半徑為2的圓有

A.0個

B.1個

C.2個

D.無數個

試題答案

C

試題解析

作AB的垂直平分線,在垂直平分線上找到A、B兩點距離為2的點,該點有兩個.

解答:根據題意作圖如右,

由圖可知經過A,B兩點且半徑為2的圓有2個.

故選C.

點評:本題主要考查確定圓的條件的知識點,此題不是很難,但需要有較強的作圖能力.

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