Step: How to draw a Line or Arrow on PDF Page: The basic step to draw a line or arrow on any PDF page in Adobe Acrobat 1. From the menu bar icon on the right, click on Drawing Toolbar > Line Toolbar 2. Select the Line Toolbar 3. Click the Arrow Tool 4. Select the drawing tool you want to be used. 5. Click the Line in the Toolbar: The Draw a line tool has a line shape as its shape to draw an arrow or line. You can click the line shape to change its width.