Aproblem states: "there are 7 more girls than boys in a class. there are 23 students in the class in all. how many girls are there in the class? " what are the unknowns in this problem? a. the number of boys and the number of girls in the class b. the number of boys in the class c. the number of students in the class d. the number of girls in the class

The unknowns in this problem are A. The number of boys and the number of girls in the class.

We know there are 7 more girls than boys, but because we don't know how many boys there are, we don't know how many girls there are.

∠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.