Step-by-step explanation:
i am guessing you dont understand what do they mean by SSS, SAS, and AA. These are three theorems that are used to compare triangles to each other. your reference book might already have the explanation.
A. SAS stands for side angle side.
this theorem is used to prove that two triangles are congruent, but we're looking for the theorem that proves that these triangles are similar. this can't be our answer.
D. SSS
the three sides of one triangle are compared with the three sides of the other triangle to prove that they're 'congruent', can not be our answer either.
B. AA
we look at the angles of both the triangles to see if the triangles are similar or not. in this case, only one triangle's angle is given. you will have to find the angle of the other one, which will obviously be the same. this is our answer. you can find the angle to check if you're correct or not.
