Question

Name the angle 180$°$ as acute or obtuse or straight or reflex or right angle.

Answer 1

Straight angle:

We know that an angle whose measure is $180°$ is called a straight angle.

Acute angle which is less than $90°$.

Right angle is exactly equal to $90°$

Obtuse angle is greater than $90°$ and less than $180°$.

Reflex angle is greather than $180°$ and less than $360°$

Hence, 180$°$ is a straight angle.