等腰三角形一腰上的高与另一腰所成的夹角为45°,则顶角的度数为(    )

在直线l上任取一点A,截取AB=3cm,再截取AC=2cm,则线段BC的长为(    )

已知一个等腰三角形的三边长分别为x,2x,5x-3,则x的值为(    )

已知一个等腰三角形两内角的度数之比为1:4,则这个等腰三角形顶角的度数为(    )

若x²-4(m-1)x+64是完全平方式,则m的值为(    )

如图,在四边形ABCD中,对角线AC,BD相交于点E,DA=DC,E为AC中点.则下列结论不正确的是(    )

已知:如图,在△ABC中,∠BAC=100°,DF,EG分别是AB,AC的垂直平分线,则∠DAE等于(    )

A:Good afternoon, Tom. Where are you going?
B:1_____________
A:Oh, to buy books? You are out! Why not go to the Readers' Room?
B:The Readers' Room?2_____________
A:It is a place where students can exchange their old books with others.
B:That sounds great!3_____________
A:It's next to Renmin Hospital, across from City Park.
B:Oh, it's a little far.4_____________
A:You can take No. 7 bus.
B:How long does it take?
A:5_____________
B:Ten minutes isn't a long time. OK, I will go there. Thanks!

—How was your vacation?
—     .

—I’m going to New York for vacation.
—     .