You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application.  
The application has a window with a canvas element. 
You need to draw a black line that has rounded edges at each end. 
Which code fragment should you use?（）

You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application. 
You write the following code fragment. (Line numbers are included for reference only.)

You need to rotate the rectangle by 45 degrees by using its upper-left corner as the axis. 
Which code fragment should you insert at line 04?（）