Click the line or arrow. Click the Format tab under Drawing Tools.
Click the Shape Outline button to select a line or arrow style or thickness.
![Click the Shape Outline button to select a line or arrow style or thickness.](http://www.java2s.com/Tutorial/Microsoft-Office-PowerPoint-2007Images/Edit_Line_Or_Arrow___Click_Shape_Outline_Button_To_Selec.PNG)
Click a color, or point to Weight, Dashes, or Arrows, and then select a style.
![Click a color, or point to Weight, Dashes, or Arrows, and then select a style.](http://www.java2s.com/Tutorial/Microsoft-Office-PowerPoint-2007Images/Edit_Line_Or_Arrow___Click_Color_Or_Point_To_Weight_Dash.PNG)
Drag a sizing handle to change the size or angle of the line or arrow.
![Drag a sizing handle to change the size or angle of the line or arrow.](http://www.java2s.com/Tutorial/Microsoft-Office-PowerPoint-2007Images/Edit_Line_Or_Arrow___Drag_Sizing_Handle_To_Change_Size_O.PNG)