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歡迎您訪問數學考題練習:已知:A,B,C,D,E五個點中無任何三點共線!

數學考題練習:已知:A,B,C,D,E五個點中無任何三點共線

更新時間:2024-01-12 16:37:43作者:貝語網校

已知:A,B,C,D,E五個點中無任何三點共線,無任何四點共圓,那么過其中的三點作圓,最多能作出

A.5個圓

B.8個圓

C.10個圓

D.12個圓

試題答案

C

試題解析

根據題意判斷出5點構成的三角形個數,即可得出過三點作圓的個數.

解答:根據題意知,A,B,C,D,E五個點的組合有:

A,B,C; A,C,D; A,C,E; A,B,E; A,B,D;

A,D,E; B,C,E;B,D,E;B,C,D; C,D,E;

故最多能作出10個圓.

故選:C.

點評:本題主要考查了確定圓的條件,主要利用列舉法得出所有可能是解題關鍵.

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