4MA0 Foundation June 2016 Paper 1 Q3

3 The diagram shows two quadrilaterals and a triangle on a square grid.

Square grid with points A, B, C, D, E, F joined to form quadrilaterals ABEF and BCDE and triangle DEF
(a) Measure the length of DF.
State the units of your answer. (2)
(b) On the diagram, mark with arrows (>) a pair of parallel lines. (1)
(c) Write down the mathematical name of quadrilateral ABEF. (1)
(d) On the diagram, mark an obtuse angle with the letter O. (1)