Select the “Insert Graphic” option found under “Exercise” in the menu bar, or directly by clicking the ” Graphic” button located in the “Insert Block” section.

We can configure the graphic size (width and height) using the two text boxes which are in the top-left corner.

To draw a line first we have to select “/” (Line) from the toolbar and set the size and colour that we want for the line.

Select “/”.

Select the line size from the drop-down list.

Set the colour from the colour palette.

And draw the line using the mouse.

As a result you will see the line included in the exercise.