I need to construct plan shapes by drawing horizontal, vertical and diagonal lines, but I can't find these anywhere. What am I missing?
I've attached a simple line SVG here which you can import into VideoScribe. It is rotated by 45 degrees but you can copy and rotate it how you like in VideoScribe. You can enter a numerical rotation value in the image properties.
There are also a few line images in the VideoScribe image library. These can be found by searching for 'line'.