(b) ABCE is an irregular quadrilateral with AB parallel to CE. Find the values of the two pronumerals a and 3, giving reasons. (3 marks) A B (7 () Find the perimeter of a square with diagonal length 8 centimetres. Express your answer correct to 2 decimal places. (3 marks) Question 6 (9 marks) For each of the following questions you must provide clear reasoning to support your answer. Assume all diagrams are not drawn to scale. (a) Examine the diagram that follows and complete the following sentence. AN (e B C AABC is scalene equilateral obtuse angled right angled =0 aw > isosceles Choose the correct response(s) and justify your choice(s). More than one answer may be possible. (3 marks) Question 7 (5 marks) A rocket launched vertically from L is observed from A. Soon after launch the rocket is at position M and its angle of elevation (from A) is 25. It then continues to climb vertically from M for 3000 metres to a position N where its angle of elevation (from A) is 50. (a) Copy the following diagram into your assignment. Not to scale Mark all points (A, L, M and N), the two angles described in the problem above and the distance 3000m onto your diagram. (3 marks) (b) Use your diagram to determine the size of