How many terms are in 9c-4+6d

Which is equivalent to 10/12? options: 10/18 5/6 3/12 9/11

With: label the vertices and all the elements needed. find x

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.