![](https://static.youtibao.com/asksite/comm/h5/images/m_q_title.png)
[单选题]
已知等腰△ABC的周长为10,底边长y关于腰长x的函数关系式为y=10-2x,则此函数的定义域为()
A.R
B.{xx>0}
C.{x0<x<5}
D.{x5/2<x<5}
![](https://static.youtibao.com/asksite/comm/h5/images/m_q_a.png)
D、{x5/2<x<5}
![](https://static.youtibao.com/asksite/comm/h5/images/solist_ts.png)
A.R
B.{xx>0}
C.{x0<x<5}
D.{x5/2<x<5}
D、{x5/2<x<5}
A.已知∠C=60°,∠B的外角是105°,画锐角△ABC
B.已知AB=5cm,BC=2cm,画等腰△ABC
C.已知BC=4cm,BC边上的高AD=2cm,画一个钝角△ABC
D.已知AB=3cm,AC=4cm,画直角△ABC