Welcome back, in this article I will shows how to draw straight vertical, horizontal & triangle lines in MS Word 2016, 2010 and 2017, its little hard to draw straight line by using mouse; you need to move mouse in the straight way, but if you hold “Shift” key before drawing the line than it will draw a straight line even you move mouse in wrong direction, you don’t need to move mouse on accurate position, so just hold “Shift” and drag the mouse to draw a straight vertical horizontal or triangle lines in MS Word.