Which of the following is the appropriate way to name the line connecting points a and d

Anyone know? is appreciated! will mark brainliest if correct!

Graph y ≥ -x^2 - 1. click on the graph until the correct graph appears.

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.