Which method and additional information would prove δonp and δmnl similar by the aa similarity postulate?

segments om and lp intersect at point n; triangles are formed by points lnm and onp; line k intersects with both triangles at point n.

use rigid and nonrigid transformations to prove segment pn over segment mn = segment ln over segment on.
use a rigid transformation to prove that ∠npo ≅ ∠nlm.
use rigid and nonrigid transformations to prove segment pn over segment ml = segment ln over segment on.
use a rigid transformation to prove that ∠nlm ≅ ∠lmn.