Question 8 (2+2+2 = 6 marks) The diagram shows a pentagon ABCDE.
DC is parallel to AB.
The size of an exterior angle at A is 67°
The size of an exterior angle at B is 112°
The size of an exterior angle at C is tº
The size of an exterior angle at D is 74°
The size of an exterior angle at E is yº
(a) (i) Work out the value of x.
(ii) Work out the value of y.
(b) Work out the sum of the interior angles of the pentagon ABCDE.​