A straight line.
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'.)
An angle measuring exactly 90 degrees is a right angle.
right angle right angle
Obtuse. Any angle measuring greater than 90 degrees but less than 180 is considered obtuse. An acute angle is any angle measuring between 0 and 90 degrees. A right angle is an angle measuring exactly 90 degrees while a straight angle measures exactly 180 degrees.
A right angle is exactly 90 degrees.
180 degrees is exactly half of a circle: thus a straight line.
An obtuse angle
It is a right angle triangle
An angle that is exactly 90 degrees is called a right angle.
An angle which measure exactly 90 degrees is called a right angle.
It is an "obtuse angle."Angles that are less than 90 degrees are "acute angles."Angles that are exactly 180 degrees are "straight angles."Angles that are exactly 90 degrees are "right angles."
An angle measuring more than 90 degrees is obtuse. An angle measuring less than 90 degrees is acute. An angle measuring 90 degrees is right.