Bx = (1/2+(3+1/2))= 8/2 = 4
By = (-3/2-(2+3/2) = -10/2 = -5
equazione retta AB =-7x/7-1 = -x-1
equazione retta MC = 2x/2-2 = x-2
AB = √7^2+7^2 = 7√2 u
BC = AC = √5^2+2^2 = √29 u
CM = √(3/2)^2+(3/2)^2 = √18/4 = 3√2 /2u
perimetro 2p = 7√2+2√29 u
area A = AB*CM/2 = 7√2*3√2 /4= 21/2 u^2