Which is defined using the undefined terms point and line

If 1/√5+1/√5+1=p+q√r , find the values of p, q and r

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.

Which of the following is the best first step in solving the equation below? 4+2㏒³x=17