If the perimeter of a square is 20 cm, what is its area? O A. 10 cm B. 20 cm2 O C. \ 25 cm O D. 100 cm2​

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.