You are waiting at the end of a long straight line at coffee express. your
friend denzel is r + 12 feet in front of you. denzel is 2r + 4 feet away from me
front of the line. if denzel is in the exact middle of the line, how many teet
are you from the front of the line?

you are 40feet away from the front

r+12=2r+4

so

r=8

so distance from Denzel to you is 8+12=20

and thus double this is 40

∠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.