The vertices of are A(1,1),B(9,3), and C(3,5). (a) Find the perimeter of (b) Find th...

The vertices of are A(1,1),B(9,3), and C(3,5).

(a) Find the perimeter of

(b) Find the perimeter of the triangle that is formed by joining the midpoints of the three sides of

(c) Compute the ratio of the perimeter in part (a) to the perimeter in part (b).

(d) What theorem from geometry provides the answer for part (c) without using the results in (a) and (b)?