1. (a) a = 80° b = 50° d = 43° 2. (i) a (ii) c and a (iii) a and b 3.
4. (a) No (b) Yes
5.
6. (a) x = 45° right-angled isosceles
(b) x = 30° right-angled scalene (c) x = 30° equilateral 7. (a) False (b) True (c) False |
1. (a) a = 80° b = 50° d = 43° 2. (i) a (ii) c and a (iii) a and b 3.
4. (a) No (b) Yes
5.
6. (a) x = 45° right-angled isosceles
(b) x = 30° right-angled scalene (c) x = 30° equilateral 7. (a) False (b) True (c) False |