A1 cao 10 6 3 M1 measuring of one of the lines, ± 2mm, and scaling (×2) M1 a complete method, + scaled or unscaled AB BC AC, – A1 answer in range 4.8 to 7.2 supported by correct working 11 3 : 2 2 M1 for 78 : 52 oe or 2 : 3 A1 cao 12 shown 4 M1 for a method leading to the evaluation of another angle in triangle e.g. = 46 or = 180 113 (= 67) ABC, ABC BAC – A1 = 67 ACB C1 for all appropriate reasons related to method shown, e.g. vertically opposite angles are equal, angles on a straight line add to 180º, angles in a triangle add up to 180º C1 for concluding statement, e.g. = = 67° and isosceles ACB BAC triangle has two equal angles
A1 cao 10 6 3 M1 measuring of one of the lines, ± 2mm, and scaling (×2) M1 a complete method, AB + BC – AC, scaled or unscaled A1 answer in range 4.8 to 7.2 supported by correct working 11 3 : 2 2 M1 for 78 : 52 oe or 2 : 3 A1 cao 12 shown 4 M1 for a method leading to the evaluation of another angle in triangle ABC, e.g. ABC = 46 or BAC = 180 – 113 (= 67) A1 ACB = 67 C1 for all appropriate reasons related to method shown, e.g. vertically opposite angles are equal, angles on a straight line add to 180º, angles in a triangle add up to 180º C1 for concluding statement, e.g. ACB = BAC = 67° and isosceles triangle has two equal angles
17742_06b_mock_papers_set_1_-_paper_3f_mark_scheme.docx