I use PowerPoint for drawings and diagrams. When I try to add a vertical straight line, it is always slightly tilted (~2 degrees). I have the same problem when I am trying to draw a horizontal line (88 or 92 degrees rather than 90 degrees) I would like to force the line to be 0 degrees (truly vertical) or 90 degrees (truly horizontal). How can I do that?
Double click on the line and change the height to 0 in the "size" window (near the top right)
Note: if the height doesn't change, click on the down-arrow next to the height to force it to zero.
Note2: Sometimes for almost-horizontal lines, the height will say it is zero, even though it is not quite zero. Click the down arrow and it will make it truly zero.
I'm using office 2013. As "Opsin" mentioned, you have to hold shift + ctrl both when drawing line. For me, this didn't worked on already draw line. You have to draw a new line while press both above keys.
Also, if you have already draw line (not straight line) and want to make it as vertical line follow below steps. 1. Click on that line 2. Select Format from top bar. 3. Click expand icon inside of size section 4. On new expand section, go to Size & Position section and under size set WIDTH to zero. (Please refer below screen capture) Image
Note -: As "Scot" mentioned, you don't need to hold both Shift and Ctrl. Just hold Shift key only, when drawing straight line.