Hi!
I'm using the pen tool, and I want to draw points that are exactly horizontal/vertical to another point. Essentially, if I'm drawing a shape such as:
A B
C D
I want A and B to be horizontal and C and D to be horizontal to each other. I attached some images of my current settings. On a laptop, I know that holding shift can keep lines straight, but I can't find the equivalent on an ipad. I tried holding one finger and two fingers down while creating the line. Sometimes a purple line appears to show vertical/horizontal alignment but I can't seem to figure out why it shows up only sometimes. It is also extremely sensitive and the line doesn't snap to that point, I have to very carefully try and align it, but then the purple line disappears.