Hi,

When I sketch or even use lines to create a shape, the ends do not necessarily meet so exactly that I can create a planar.

Yes, if I keep magnifying and panning ad infinitum, finally the ends will meet to create an enclosed "shape" that can be made planar.
But this is a pain; I feel certain I am missing something which can easily bring together nearby points, and enclose the shapes quickly, and make planars.

What am I missing?

Nariman.