Describe and correct the error in the problem. plz do the correction  right.

Vertical angles share a vertex, and have the same lines for sides, but do not have a side in common. Angles ACB and BCD have side BC in common, so cannot be vertical angles.

Angles ACB and ECF are vertical angles.

There is no vertical angle in the diagram corresponding to ∠BCD, as ray CD is not part of a line that passes through point C.

∠lno ≅ ∠lnm

∠oln ≅ ∠mln

step-by-step explanation:

given   that triangle lno is congruent to triangle lnm.

we have to fill up the blanks in the given question.

according to above order of congruency   kept in mind we can say that

∠lno ≅ ∠lnm

∠oln ≅ ∠mln

ln ≅ ln due to common in both.

hence, by sas congruency,

the side angle side rule   states that if two sides and the included angle of one triangle are congruent to another triangle, then these two triangles are congruent.