The average heights of four samples taken from a population of students are shown in the table. Which of these is most likely closest to the average height
of the population?
A. 57
B. 66
C. 60
D. 62

In the figure below, ∠dec ≅ ∠dce, ∠b ≅ ∠f, and segment df is congruent to segment bd. point c is the point of intersection between segment ag and segment bd, while point e is the point of intersection between segment ag and segment df. the figure shows a polygon comprised of three triangles, abc, dec, and gfe. prove δabc ≅ δgfe.