Line has ________ fixed length .

A line PQ is symbolically written as

A ray CD is symbolically written as

A line segment RS is symbolically written as

When two rays emerge from a common point _______ is formed

The fixed point of the $\overrightarrow{TO}$ is

Angles are measured in

The common end point where the two rays meet is called

An angle which measures more than $0\degree$ and less than $90\degree$ is called

An angle which measures $90\degree$ is called

An angle which measures $0\degree$ is called