If the radius of the circle is increased by $2$ times, then the diameter is increased by,

Identify the following as closed or open figure. Write open/closed.

The figure is a/an _____ curve. (closed/open)

Identify the following as closed or open figure. Write open/closed.

Identify the following as closed or open figure. Write open/closed.

Identify the following as closed or open figure. Write Open/Closed.

Identify the figure given below as closed/open.

Study the given figure and name the point which is collinear with points $A$ and $B$.

Study the given figure and answer the following questions- Name the non-collinear point which is far to the line.