一个三角形的两个角分别是2cm、6cm ,它的第三条是【 】 .A.5cm B.4cm C.1cm
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![一个三角形的两个角分别是2cm、6cm ,它的第三条是【 】 .A.5cm B.4cm C.1cm](/uploads/image/z/8889862-22-2.jpg?t=%E4%B8%80%E4%B8%AA%E4%B8%89%E8%A7%92%E5%BD%A2%E7%9A%84%E4%B8%A4%E4%B8%AA%E8%A7%92%E5%88%86%E5%88%AB%E6%98%AF2cm%E3%80%816cm+%2C%E5%AE%83%E7%9A%84%E7%AC%AC%E4%B8%89%E6%9D%A1%E6%98%AF%E3%80%90+%E3%80%91+.A.5cm+B.4cm+C.1cm)
一个三角形的两个角分别是2cm、6cm ,它的第三条是【 】 .A.5cm B.4cm C.1cm
一个三角形的两个角分别是2cm、6cm ,它的第三条是【 】 .A.5cm B.4cm C.1cm
一个三角形的两个角分别是2cm、6cm ,它的第三条是【 】 .A.5cm B.4cm C.1cm
应该是:一个三角形的两个边分别是2cm、6cm ,它的第三条是【 】 .
这个问题要根据三角形的三边关系:任意两边之和大于第三边,两边之差小于第三边.
第三边的范围是:4<第三边<8
所以选A.
一个三角形的两个角分别是2cm、6cm ,它的第三条是【 A.5cm 】 。
A.5cm B.4cm C.1cm
BHaving___tests and exams and getting__homework make many studets feel stressed.
A.too much;much too B.too many;too much C.much too;too many D.many too;much too
二.根据首字母提示写出句中所缺单词,使句子意思完整正确
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BHaving___tests and exams and getting__homework make many studets feel stressed.
A.too much;much too B.too many;too much C.much too;too many D.many too;much too
二.根据首字母提示写出句中所缺单词,使句子意思完整正确
It is good for you to read English aloud every day to improve___your English.
2.It is good to share___your problems with others.
3.Millie is sd because she got low marks____in her exams
三.用下面词组的正确形式完成句子
forget about ,stay up late,hand in,deal with,give up,as a result,do well in
People born under Libra like peace and do not like to forget about___others.
2.Mr Hu always reminds us to_hand in_____our homework on time.
3.Some students often_stat up late___to do extra exercises.
4.Don't_give up_____.I'm sure your dream will come true one day.
5.There are many difficulties for us to_deal with____.
6.David is the cleverest students in our class.He_does well in____all the subjects.
7.His robot does all his housework for him._As a result______,he has more free time to relax.
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A,口算:2+1<6. 2+4=6 ,两边之和大于第三边。排除B和C
A
第三边应大于其他两边之差,小于其他两边之和