Answer:
perimeter = 10 + √10 units
Explanation:
First, we will need to get the length of each line using the distance formula which is as follows:
distance = \(\sqrt{( x_{2}- x_{1} )^2 + ( y_{2} - y_{1})^2 }\)
1- length of AB:
AB = \(\sqrt{(-1--1)^2+(1-6)^2}\) = 5 units
2- length of AC
length of AC is the same as AB = 5 units
3- length of BC:
BC = \(\sqrt{(2--1)^2+(2-1)^2}\) = √10 units
Now, we can get the perimeter by adding the side lengths as follows:
perimeter = 5 + 5 + √10
perimeter = 10 + √10 units
Hope this helps :)
