There isn't a preformed shape to meet that but it is very simple to create
one.
Use Insert, Shape and choose the line with an arrow at one end.
Draw the arrowed line whilst holding the SHIFT key.
Then select a plain line and draw it so that it extends the previous line
through the arrow (holding down the SHIFT key).
Select both these line objects (click on one line and shift+Click on the
other, right-click on the selections and choose Grouping, Group.
You now have a single line object that you require. You can use it many
times by holding down the Control key to copy it elsewhere; rotate it to any
angle and lengthen or shorten it by selecting it and pulling or dragging one
of the green handles.
Note that holding down the shift key ensures the line is at an exact set
angle making drawing a second line at the same angle much easier!
