These are the steps needed to produce the following angle:

1. Open the Figure Editor.
2. Insert a line and position it as shown.
   
   
    
3. Insert a second line and attach it to the end-point of the first line.
   
   
    
4. While holding down the CTRL key, select the 3 points.  Select them in order so that the vertex of the angle is the 2nd point chosen.
   
   
    
5. Press the Angle button on the toolbar.
   
   
    
6. Insert  arrows and connect them to the end-points of the lines.
   
   
    
7. Select a line and right-click.  A menu appears, select Line Width...
   
   
   
   The Line Width Dialog appears.  Select a line width of 2 and close the dialog box.
   
   
   
   Repeat these steps with the other line.
    
8. Select the angle and right-click.  A menu appears, select Line Style > Dashes.
   
   
   
   Then select Line Width... and change the line width to 2.
    
9. Insert a label by clicking on the Label Button on the toolbar. (or by selecting it from the right-click menu)
   
   
   
   The Label dialog box will appear.  Enter 70 in the textbox.  Select the degree symbol from the Symbols dropdown box.  Click OK close the dialog box.
   
   
    
10. Position the label.