蝴蝶燕尾模型<br />[PaperNameEnd]<br />一、单项选择题（本大题共2小题，每小题5分，共10分）<br />[TypeNameEnd]<br />已知长方形<img width="42" height="16" src="http://iexam.demo.kesion.com/ks_inc/ueditor/themes/default/images/spacer.gif" word_img="file:///C:/Users/XYT-PC/AppData/Local/Temp/msohtmlclip1/01/clip_image002.png" style="background:url(http://iexam.demo.kesion.com/ks_inc/ueditor/themes/default/images/word.gif) no-repeat center center;border:1px solid #ddd"/>的面积是16，三角形<img width="34" height="16" src="http://iexam.demo.kesion.com/ks_inc/ueditor/themes/default/images/spacer.gif" word_img="file:///C:/Users/XYT-PC/AppData/Local/Temp/msohtmlclip1/01/clip_image004.png" style="background:url(http://iexam.demo.kesion.com/ks_inc/ueditor/themes/default/images/word.gif) no-repeat center center;border:1px solid #ddd"/>的面积是3，三角形<img width="34" height="17" src="http://iexam.demo.kesion.com/ks_inc/ueditor/themes/default/images/spacer.gif" word_img="file:///C:/Users/XYT-PC/AppData/Local/Temp/msohtmlclip1/01/clip_image006.png" style="background:url(http://iexam.demo.kesion.com/ks_inc/ueditor/themes/default/images/word.gif) no-repeat center center;border:1px solid #ddd"/>的面积是4，那么三角形<img width="34" height="17" src="http://iexam.demo.kesion.com/ks_inc/ueditor/themes/default/images/spacer.gif" word_img="file:///C:/Users/XYT-PC/AppData/Local/Temp/msohtmlclip1/01/clip_image008.png" style="background:url(http://iexam.demo.kesion.com/ks_inc/ueditor/themes/default/images/word.gif) no-repeat center center;border:1px solid #ddd"/>的面积是__________