In context of the given figure:

(i) Is it a simple closed curve?

(ii) Is it a quadrilateral?

(iii) Draw its diagonals and name them.

(iv) State which diagonal lies in the interior and which diagonal lies in the exterior of the quadrilateral.

Draw a rough sketch of a quadrilateral KLMN. State:

(i) two pairs of opposite sides

(ii) two pairs of opposite angles

(iii) two pairs of adjacent sides

(iv) two pairs of adjacent angles

State whether the following statements are true (T) or false (F):

(i) Every diameter of a circle is also a chord.

(ii) Every chord of a circle is also a diameter.

(iii) Two diameters of a circle will necessarily intersect.

(iv) The centre of the circle is always in its interior.

Fill in the following blanks:

(i) There is exactly one line passing through ….. distinct points in a plane.

(ii) Two different lines in a plane either ….. at exactly one point or are parallel.

(iii) The curves which have different beginning and end points are called ….. curves.

(iv) A curve which does not cross itself at any point is called a ….. curve.

(v) A simple closed curve made up entirely of line segments is called a …. .

(vi) A quadrilateral has ….. diagonals.

(vii) A line segment has a ….. length.