The Right Angle.
90 degrees
An angle greater than 0 but less than 90 degrees is an acute angle
A right angle is 90 degrees if an angle is wider than 90 it is obtuse if it is less than 90 it is an acute angle.
A right angle... I know that and I abhor math!
An angle which measure exactly 90 degrees is called a right angle.
There isn't a specific name for 45 degrees, like when 90 degree angle is called a "right angle". However, there is a general term for any angle less than 90 degrees - "acute angle". Here's a full list: < 90 degrees = acute 90 degrees = right angle between 90 & 180 degrees = obtuse 180 degrees = straight line between 180 & 360 degrees = reflex 360 deg = revolution (because it turns in a complete circle)
An angle of 90 degrees is a right angle.
An angle less than 90 degrees is called an acute angle.
A right angle.
An obtuse angle
An angle greater than 90 but less than 180 degrees is an obtuse angle.
A right angle