180
Degrees in semicircle
A 180 is a half-rotation—turning to face the opposite direction, from the 180 degrees in a semicircle.
In skateboarding and other action sports, it's a trick involving a half-spin.
Figuratively, to do a 180 or pull a 180 is to reverse course completely: He did a 180 on immigration policy.
The opposite of a 360, which brings you back where you started.
180-degree driving reversal
- flipQuick turning motion
- about-faceFull directional reversal
- pivotPoint of rotation
- turnaroundShift in opposite direction
switch · backtrack · reverse · overturn · shift · transformation · changeover · conversion
Unit of measurement
- rotationTurning on an axis
- turnRotational movement
- supplementaryServing to complete
- geometryScience of spatial relationships
protractor · measure · semicircle · reflex · obtuse · perpendicular · bisect · vertex
u-turn
180-degree driving reversal
- flipQuick turning motion
- about-faceFull directional reversal
- pivotPoint of rotation
turnaround · switch · backtrack · reverse · overturn · shift · transformation · changeover · conversion · volte-face
degree
Unit of measurement
- rotationTurning on an axis
- turnRotational movement
- supplementaryServing to complete
geometry · protractor · measure · semicircle · reflex · obtuse · perpendicular · bisect · vertex · arc
halfpipe
U-shaped ramp for tricks
rotation · trick · vert · ramp · backside · frontside · fakie · switch · air · grab
1800
Numeral for nothing
360 · full rotation · straight ahead · zero · full turn
180no change
consistency · same direction · continuity · doubling down · persistence
- 180 degreesAngle of a straight line