Question

An angle which measures 0${}^o$ is called

• A. obtuse
• B. straight
• C. zero
• D. right

Answer 1

The correct option is C zero

$\Rightarrow$ An angle with a measure of $0^o$ is called a $zero$ angle.

$\Rightarrow$ Consider two rays that form some angle greater than zero degrees, like the rays in the clock .

$\Rightarrow$ Then picture one of the rays rotating toward the other ray until they both lie in the same line. The angle they create has been shrunk from its original measure to $0^o$. The angle that is now formed has a measure of $0^o$.