Answer:
A and D
Step-by-step explanation:
Either rotate the dilated circle 180° about point C or Translate the dilated circle so that it's centre is at point B so that we come to know that the circles are similar
x = 9
this is a ratio problem. You can see that 12/6 = 2, so you can also take 18/2 to get 9.
(1,5) (7,13) (10,17) (7,13)
1 4 7 10 13
5 9 13 17 21
