Mark the right angle, acute angle and obtuse angle with different colours in the following figure.

   

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 name of the vertex of the angle :

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

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

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

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

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.