Name the type of the angle of $90°$.

Look at the below figure and name the angle marked by digit $1$ by using three letters :

Look at the following figures and write the name of the angle in two ways

The pictures given below show a signalling system called 'semaphore' which was used by the navy. Name the angle that each signal forms.

Look at the following figures and write the names of arms of the angle

Look at the following figures and write the name of the vertex of the angle :

What is the magnitude of the obtuse angle formed between the two hands of a clock at $7:00$? If the obtuse angle is $k°$, then write the value of $k$ in the answer box.

Look at the angle in the picture and fill the table.

Angle	Right angle	More than a right angle	Less than a right angle