Interior and exterior of a quadrilateral

Draw a rough sketch of a quadrilateral PQRS. Draw its diagonals.Name them.Is the meeting point of the diagonals in the interior or exterior of the quadrilateral?

If the exterior angle of a quadrilateral formed by producing one of its sides is equal to the interior opposite angle, prove that the quadrilateral is cyclic.

Find each interior and exterior angle of a regular polygon having 30 sides.

Which of the following can be four interior angles of a quadrilateral?

If an exterior angle of a cyclic quadrilateral be 50^(@) , then the opposite interior angle is :

Write the points which lie in the exterior of quadrilateral ABCD.

How many sides does a regular polygon have whose interior and exterior angles are in the ratio 2 : 1?

In the adjoining figure,name all the interior and exterior angles of the triangle