I have an anchor point B selected on a shape created with pen tool as shown in the image
Given that 2*AB = BC. Now, whatever pen tool I use to drag C or A, it only changes BC or AB, not both of them. The only way I found is to use convert point tool, but the problem is it resets AB = BC.
Question: How to drag C and A, in opposite directions, simultaneously keeping ABC a straight line?
Cheers.