德望學校 – S1數學 1B Chapter 10 Introduction to Coordinates – CQ (13-18)

試卷答案:

1. a) (8, 5)
   b) 44 (sq. units)
   c) k = -3 or 8
2. a) D (2, -m – 2)
   b) (-7, 2)
3. a) P = (8, 130°)
   b i) 90°
      ii) 20 (sq. units)
4. a) (3, 1)
   b) 18 (sq. units)
5. a) A’ = (0, 3), B’ = (-3, -5)
   b) 6 (units)
6. a) –
   b) 29 (sq. units)
7. a) 18 (sq. units)
   b i) (20, -2)
      ii) 18 (sq. units)
8. a) Number of axes of reflectional symmetry = 0
        Order of rotational symmetry = 4
   b i) (-7, 0)
      ii) 13 (units)
9. a) 90°
   b) 7 (sq. units)
10. a) (7, 2)
    b) 60 (sq. units)
    c) 15 (sq. units)
11. a) –
    b) 9 (units)
    c) 27 (sq. units)
12. a) (7, -2)
    b i) 60 (sq. units)
      ii) n = 4 or n = 16
13. a) B = (-2, -4), C = (-2, 4)
    b i) (2k +4, -8)
      ii) k = 3
14. a) B = (-9, 3), C = (3, 9)
    b) 108 (sq. units)
15. a) 50 (sq. units)
    b) (5, 1)

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