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歡迎您訪問數(shù)學(xué)考題練習(xí):如圖,下列表示不正確的是!

數(shù)學(xué)考題練習(xí):如圖,下列表示不正確的是

更新時(shí)間:2024-01-12 16:42:34作者:貝語網(wǎng)校

如圖,下列表示不正確的是

A.AB+BC=AC

B.∠C=45°

C.∠B+∠B=180°

D.∠1+∠2=∠ADC

試題答案

C

試題解析

看清題形,根據(jù)選項(xiàng)一一分析,排除錯(cuò)誤答案.

解答:A、看圖可知AB+BC=AC;

B、∠1+∠2=∠ADC,∠C可能等于45°;

C、看圖可知,AB不與AC垂直,所以∠B不可能是直角,所以∠B+∠B=180°不正確;

D、看圖可知,∠1+∠2=∠ADC.

故選C.

點(diǎn)評:本題是對垂直定義的考查,大家在做題時(shí)要注意垂直的作圖.

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