Calculate the sides
A = ( int ( pow ( ( X2 - X1 ) , 2 ) ) + int ( pow ( ( Y2 - Y1 ) , 2 ) ) ) NEW_LINE B = ( int ( pow ( ( X3 - X2 ) , 2 ) ) + int ( pow ( ( Y3 - Y2 ) , 2 ) ) ) NEW_LINE C = ( int ( pow ( ( X3 - X1 ) , 2 ) ) + int ( pow ( ( Y3 - Y1 ) , 2 ) ) ) NEW_LINE