180 degrees
Half a rotation
180 degrees is half a full rotation—the angle that forms a straight line.
In temperature, it's the difference between water's freezing and boiling points on the Fahrenheit scale.
The phrase most often appears figuratively: to do a 180 or turn 180 degrees is to completely reverse position, direction, or opinion.
Her attitude did a complete 180 after the meeting.
- about turn180-degree directional switch
- about-faceFull directional reversal
- reverseTurn to opposite
- oppositeReverse or contrary thing
- U-turnDirection-reversing driving maneuver
turn around · change of heart · complete opposite · flip · turnaround · straight · boiling point · water boils · angle · reflex angle · rotation · pivot · semicircle · half circle · straight angle · compass · protractor · spin
- anglesacute angle, angle, obtuse angle, right angle, straight angle
- degreeshigh school diploma, GED, BS, PhD, doctorate