An acute angle is a type of angle that measures less than 90 degrees, making it smaller and sharper than a right angle (90 degrees) or an obtuse angle (greater than 90 degrees but less than 180 degrees).
In an acute angle, the two rays or line segments forming the angle approach each other closely without creating a significant opening between them.
Acute angles are common in geometric shapes like triangles and often represent sharp or narrow turns in real-world scenarios, such as acute turns in road design or acute angles in architectural structures.