Reply To: abbreviation question Home › Forums › Nemeth Code for Math and Science › abbreviation question › Reply To: abbreviation question October 18, 2014 at 6:34 pm #22555 dworthingParticipant ASA is an abbreviation (Angle Side Angle) so you can contract and join "by" to it. Section 55aixc lists the items that you cannot use to, into and by with, and this type of abbreviation is not one of them