首页
登录
职称英语
[img]2022m10s/ct_ve01203002j_egreqjs_0191_221011[/img]AD=AB/3;AF=AC/3;BE=BC/3T
[img]2022m10s/ct_ve01203002j_egreqjs_0191_221011[/img]AD=AB/3;AF=AC/3;BE=BC/3T
游客
2025-02-23
20
管理
问题
AD=AB/3;AF=AC/3;BE=BC/3
The sum of the areas of the shaded region is what fraction of the area of triangle ABC above?
选项
答案
5/9
解析
用相似三角形原理答题。△ADF与△ABC相似比1:3,则面积比为1:9。同理,EFC与ABC面积比为4:9,所以阴影部分面积之和与△ABC的面积的比例为5/9,故答案为5/9。
转载请注明原文地址:https://www.tihaiku.com/zcyy/3969775.html
相关试题推荐
[img]2014m9x/ct_egreqm_egreqjs_0093_20148[/img]Whatistheslopeoflinekint
If[img]2014m9x/ct_egreqm_egreqjs_0069_20148[/img],whichofthefollowingcould
[img]2015m7x/ct_egreqm_egreqjs_0071_20153[/img]PointsAandBareshowninthe
Whichofthefollowingisclosestto[img]2015m7x/ct_egreqm_egreqjs_0069_20153[/i
Whichofthefollowingisequalto[img]2015m7x/ct_egreqj_egreqjs_0064_20151[/img
Ifxy2=12andxy=4,thenx=A、1B、2C、[img]2015m7x/ct_egreqj_egreqjs_0062_201
[img]2015m7x/ct_egreqj_egreqjs_0013_20151[/img]Thefigureaboveshowsthegraph
[img]2015m7x/ct_egreqj_egreqjs_0045_20151[/img]PointsA,B,C,andDareonthe
Compute(-15)3.-3,375Enter15[img]2015m7x/ct_egreqj_egreqjs_0031_20151[/img]toge
Compute[img]2015m7x/ct_egreqj_egreqjs_0029_20151[/img].-0.2528571ExplanationSin
随机试题
Swans,notedforgracefulmovementsinthewater,havebeenthesubjectofmany
You(LiJianhua)arethesecretaryofthesalesmanagerItisyourresponsibilit
anxiousabout,strong,suggest,instruct,which,especial,whether,applyto,al
审查施工图预算方法中的重点抽查法具有的优点有( )。A.重点突出 B.审查时
发审委委员审核股票发行申请文件时,有下列情形之一的,应及时提出回避( )A.某
()是考察公司短期偿债能力的关键。A.营业能力 B.变现能力 C.盈
生源地信用助学贷款期限最长为()年,还款责任由学生和家长共同承担。A.10
某产妇足月顺产后6天,阴道内少量血液流出,无腹痛,无发热,宫底位于脐耻之间,无压
压力蒸汽灭菌后的无菌物品,其有效保存期一般是( )。A.4小时 B.24小时
集体主义的本质要求是()。 (A)人民必须有组织地开展活动(B)人
最新回复
(
0
)