AL2006 has to listen because NPO or npo is a geometrical term to represent rays and angles which could be used to show obtuse,acute,right,and straight angle so the measure of npo could be less than 180°=180 degrees or it could be greater than a full circle 360°=360 degrees but the actual measurement could be 90 degrees if it’s a right angle,59 degrees if it’s acute,179 degrees could be obtuse, straight is exactly 180 degrees.
But the measure is 40 degrees I hope this helped and It’s never 0 theirs no 0 degree angle their is up to 399 to 5 degrees for angles. - I hope this helped <3 and I did this answer on my other account Faroquem9 or faroquem9 if you see this account you can give points and also give my unofficial account points too! That will be nice.