下列说法中不正确的是( ) A.三角形按边分可分为不等边三角形

下列说法中不正确的是(  )

A.三角形按边分可分为不等边三角形、等腰三角形

B.等腰三角形的内角可能是钝角或直角

C.三角形外角一定是钝角

D.三角形的中线把三角形分成面积相等的两部分

答案

C【解答】解:三角形按边分可分为不等边三角形、等腰三角形,故A不正确;

B、等腰三角形的内角可能是钝角或直角,故B不正确;

C、三角形外角可能是钝角、直角或锐角,故C正确;

D、三角形的中线把三角形分成面积相等的两部分,故D不正确;

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