Make sure the post is 'square' to the floor. [=make sure that there is a right angle where the post and the floor meet]
I'll go on the trip if I can 'square it with' my parents. [=if my parents will agree to let me go]
Here's the rest of the money. Now we're 'square'. [=now we don't owe each other anything]
(..) ...on what was then called the President's House. Now, Article , Section of the U.S. Constitution set forth... ...that a district of no more than miles square... ...should house the new seat of government. Does anyone know why? So no one state could claim the President's House. Right again. (..)2013 White House Down