3. Find the perimeter of quadrilateral ABCD with vertices A(-2,-2), B(-1, 3),
C(5, 3), and D(4, -2).
In Exercises 4 and 5, find the area of the polygon with the given vertices.
4. P(1, 1), Q(-2, 1), R(−1, −4)
5. A(3, 7), B(5, 7), C(3.-7), D(5, -7)