The common end point where the two rays meet is called

A four sided regular polygon with one angle 90^o is called

In figure angle AOB=

89^o is an example of

Number of right angles formed in the given figure is

At 3 o'clock the angle formed between the two hands of a clock is

An angle which measures 0^o is called

Angles are measured in

179^o is an example of

An angle which measures 90^o is called