An angle greater than 0 but less than 90 degrees is an acute angle.
An acute angle is larger than than 0 degrees but less than 90 degrees (a right angle).
The obtuse angle is greater than 90 degrees. It is the acute angle that is less than 90 degrees.
Obtuse. An acute angle is less than 90 degrees, a right angle is 90 degrees, and an obtuse angle is more than 90 degrees.
A complement of an acute angle must be an acute angle. An acute angle is an angle whose measure is more than 0 degrees but less than 90 degrees. For example, even if the angle was the minimum 1 degree, the complement is still 89 degrees, which is still acute. Therefore, any combination of a complement of an acute angle MUST be acute.
Obtuse (it is bigger than 90 degrees).
As it is less than 90 degrees and greater than 0 degrees it is an acute angle.
It is a reflex angle. A reflex angle is an angle that's greater than 180 degrees. An obtuse angle is an angle that's greater than 90 degrees but less than 180 degrees.
acute angle
An acute angle is less than 90 degrees.
An acute angle is less than 90 degrees
It is less than 90 degrees - acute angle
The greek letter theta is usually used to denote an unknown angle. An angle of 90 degrees is a right angle, an angle between 0-90 degrees is an acute angle, bigger than 90 degrees but less than 180 is an obtuse angle, and bigger than 180 but less than 360 is a reflex angle.
== == There is no acute right angle. A right angle has 90 degrees and considered the norm. An acute angle has less than 90 degrees. An obtuse angle has more than 90 degrees.
An obtuse angle is an angle more than 90 degrees but an acute angle is an angle less than 90 degrees.
An angle greater than 0 but less than 90 degrees is an acute angle.
An acute angle is larger than than 0 degrees but less than 90 degrees (a right angle).