As a noun, does 'arch' usually mean the shape like a bridge, i.e., curved with middle section higher, two ends lower (like ∩)? If it is the same curve but middle section lower, two ends higher (like a U), is it still called 'arch', or 'reversed arch'?
As a verb, when you read "to arch" something, should it be taken to mean to shape like a bridge like ∩, or could it also be understood as possibly U shaped? (In other words, if the author means to say to shape something like a U, should he qualify it with the word "reverse(d)" or not?
As a verb, when you read "to arch" something, should it be taken to mean to shape like a bridge like ∩, or could it also be understood as possibly U shaped? (In other words, if the author means to say to shape something like a U, should he qualify it with the word "reverse(d)" or not?
Last edited: