3 inches
If an angle measures less than 90º, it is an acuteangle.
The only angle which would be less than an acute angle is a zero angle.
A null angle and an acute angle are less than a right angle.
an angle less than 90
An angle that is less than 90 degrees is an acute angle.
A angle less than 90 degrees is a acute angle.
An acute angle is an angle measured less than 90o.
An angle greater than 0 but less than 90 degrees is an acute angle
An angle that measures 78° would be considered to be an acute angle. An angle less than 90° is an acute angle. An angle greater than 90° but less than 180° is an obtuse angle. An angle greater than 180° but less than 360° is a reflex angle.
An angle less than 90 degrees is called an acute angle.
An Acute Angle is the kind of angle that is less than 90 degrees.
An acute angle