90 degree is 1/4 of a full turn of 360 degrees.
1/360 There are 360 degrees in a full turn
1, or 100%. 360 degrees is a full circle, so a 360-degree turn is to turn completely around and continue in the same direction.
It is one whole turn.
Since a full turn is 360°, 1° would be equal to 1/360 of a full turn.
It is 1/2 of a turn.
The answer depends on the unit of measurement for 1. 1 radian is 1/(2*pi) of a full turn.
It is degrees that are fraction