Several years ago, while passing through Caracas air space, I heard this on the radio:
"Caracas Control, Piper 1234 inbound for full stop."
"Piper 1234, turn right five degrees to intercept the ILS."
"Caracas, five degrees is too little a turn for me."
"Piper 1234, can you make a 90-degree turn?"
"Affirmative. I can do 90 degrees."
"Roger. Piper 1234, make a 95-degree turn to the right, then make a 90-degree turn to the left to intercept the ILS."