A right angle is 90 degrees, so one third of a right angle is 30 degrees.
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In a three-quarter turn, there are three right angles. A right angle measures 90 degrees, so in a full turn (360 degrees), there are four right angles. Therefore, in a three-quarter turn (270 degrees), there are three right angles, as each right angle is 90 degrees.
1/4 x 90 degrees = 22.5 degrees
The right angle of a right-angle triangle, like all right angles, is 90 degrees or one quarter of 360 (a full circle). All the angles of any triangle will add up to 180 degrees.
A right angle.
A right angle has 90 degrees.