1. triangle ABC with vertices A(-3, 4), B(1, 4),
and C(3, 1)
YO A
NIC
-6-7-012

Add all Xs and add all Ys then subtract them there’s ur answer

Use pythagorean’s theorem and find the missing side lengths of the two smaller triangles and add them together
13^2 - 12^2 = 5
15^2 - 12^2 = 9
5+9 = 14
14 is the length of each side of the square
14^2 + 14^2 = 19.8
19.8 is the diagonal length of the inside if the square