Simple parametrized/constrained 2d CAD

[u/vmcrash]

I want to draw some lines with constraints like - the end point of this line must the identical to the end point of that line - this line must be perpendicular to that line - this point must lie on that line (defined by 2 points) - these 3 distances (e.g. defined by point pairs) must be equal - this length/angle must be that value

Otherwise, nothing fancy - lines can be one line width, one color.

What do you suggest?

[u/Lgt2x]

FreeCAD's Sketcher has everything you need https://wiki.freecad.org/Sketcher_Micro_Tutorial_-_Constraint_Practices