IN ∆PQR, IN FIGURE 19, M IS THE MIDPOINT OF , AND N IS THE MIDPOIN...

19. In ∆PQR, in Figure 19, M is the midpoint of , and N is the midpoint of . and .The sum of the areas of ∆MPS and ∆NTR is what part of the area of ∆PQR?(A)(B)(C)(D)(E)Fig. 19