在△ABC中，∠A=40°，当∠B=______时，△ABC是等腰三角形． 发布时间：2017-05-27 14:17 │ 来源：www.tikuol.com 题型：填空题 问题： 在△ABC中，∠A=40°，当∠B=______时，△ABC是等腰三角形．
题型：填空题 词语填空。用方框中所给单词的适当形式填空，使短文通顺、正确、连贯(每个单词限用一次)think we few interest difference send need bright report wonder No one can go through his whole life without experiencing any hard time. When something troubles _1_, do we look on the dark side or the _2_ side? Here is a story that can speak for it. Two salespersons, Jimmy and Harry, were _3_ to a poor country in Africa, where only _4_ people wore shoes. After they got there, they had to _5_ something back to their boss. Jimmy said, "It's a pity that people here don't wear shoes. Nobody is in _6_ of shoes. I see no promising(有希望的) future for our products." How about Harry? He said, "What a _7_ chance for us! People around the country don't have shoes. I can say it for sure that we'll sell a lot of shoes here." _8_, isn't it? They went to the same country, sold the same products, but they had different _9_ in their minds, and the results surely would be 10 . If you were the salesperson, which one would you like to be? 1. _____ 2. _____ 3. _____ 4. _____ 5. _____ 6. _____ 7. _____ 8. _____ 9. _____ 10. _____ 查看答案
题型：填空题 已知△ABC的顶点A（0，1），AB边上的中线CD所在的直线方程为2x-2y-1=0，AC边上的高BH所在直线的方程为y=0．（1）求△ABC的顶点B、C的坐标；（2）若圆M经过不同的三点A、B、P（m，0），且斜率为1的直线与圆M相切于点P，求圆M的方程；（3）问圆M是否存在斜率为1的直线l，使l被圆M截得的弦为DE，以DE为直径的圆经过原点．若存在，写出直线l的方程；若不存在，说明理由． 查看答案
