If it measures 90 degrees, then it is called a right angle.
An angle that measures more than 90 degrees is called an obtuse angle.
a "right angle"
A right angle
An angle which measures 90 degrees is called a right angle. An angle of less than 90 degrees is an acute angle and one which is more than 90 degrees is an obtuse angle.
A right angle is exactly 90 degrees.
An angle greater than 90 degrees is called an obtuse angle.
That is an obtuse angle.
An angle which measures exactly 90 degrees is called a "right" angle. (One measuring less than 90 is 'acute', and one measuring more than 90 degrees is 'obtuse'.)
a right angle measures 90 degrees
An angle that measures to precisely 90o is called a right angle.
an acute angle is less than 90 degrees; an angle of more than 90 degrees is called an obtuse angle