Question

why are acute angle called so?​

Answer 1

An angle equal to 0° or not turned is called a zero angle. Angles smaller than a right angle (less than 90°) are called acute angles ("acute" meaning "sharp").

Answer 2

An angle equal to 0° or not turned is called a zero angle. Angles smaller than a right angle (less than 90°) are called acute angles ("acute" meaning "sharp").