Solve eight and three fifths minus two and four ninths. a six and seven forty fifths
b six and seven fourteenths
c seven and seven forty fifths
d seven and seven fourteenths

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.