Answer:
2
Step-by-step explanation:
If we take 1 and add another 1, you will get 2
You add all the sides together, a good way to remember it is "perimeter, plus"
3/12 + 10/12 = 13/12 because the points lie in-between the 1/6 and 2/6 marks and the 6/6 and 7/6 marks.
