A right angle is a turn of 90 degrees.
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right angles
Depends on the angle. Acute angles are less than 90 degrees. Right angles are 90 degrees. Obtuse angles are over 90 degrees.
A square has four angles. All of them are right angles of 90 degrees.
2 right angles will form a supplementary angle of 180 degrees
it depends on the angle. Right angles always have 90 degrees. You can use a protractor to measure the angle