Chapter 8 - Section 8.1 - Area and Initial Postulates - Exercises - Page 361: 33

There are many similar triangles.

Using the fact that M, N, and P are all midpoints, we find that all of the smaller sets of sides are congruent, meaning that all of the 4 smaller triangles are congruent by SSS. Because ABC contains four of the smaller triangles, this means that its area is 4 times are great as the area of one of the smaller triangles, triangle MNP.