Using the graph above, identify the constant of proportionality between the number of shirts and how much they cost? Hint: simplify your answer A. K=80
B. K=20
C. K=10
D. K=8

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.