. Square ABCD has vertices at A(−2,1),B(2,7), C(8,3), and D(4,−3). How many units is the perimeter of square ABCD?

Answer 1

Since we're working with a square; we only need 1 side; so: -2, 1; and 2, 7 are the 2 points.

We are to work with a "right triangle". Side "a"= 2-(-2)=4; side "b"=7-1=6. Formula: a^2+b^2=c^2.

4^2+6^2=52^.5=c=7.21; c*4=28.84perimeter.

Answer 2

1. determine the distance between any two consecutive points
2. multiply that amount by 4