The answer is 26. I got this answer by plotting out the points on a coordinate plane and counting the perimeter around the shape to get 26. Hope this helps! :)
Firstly, plot the points on graph paper which you can find on the internet. The first number in the ordered pair, (the ones in parenthesis), is the x coordinate. The other number is the y coordinate. Put these onto a graph which is attached. The perimeter is 26.
