An angle with a measurement less than 90°.
An acute angle.
an acute angle
an acute angle
acute
"Acute" describes an angle less than 90 degrees. "Obtuse" describes an angle more than 90 but less than 180.
Obtuse.
acute
acute angle
An acute angle
Acute angle
1 acute angle = 1 acute angle
the vertices if there are any if not it is not a angle. don't forget about the angles such as a right angles,acute angles,or obtuse angle