State if the triangles in each pair are similar. If so, state how youknow they are similar.A) not similarC) similar; AA similarityB) similar; SSS similarityD) similar; SAS similarity

Determine the ratio of corresponding sides of triangle CQD and triangle SQR.
[tex]\begin{gathered} \frac{CQ}{SQ}=\frac{18}{63} \\ =\frac{2}{7} \end{gathered}[/tex][tex]\begin{gathered} \frac{DQ}{RQ}=\frac{12}{42} \\ =\frac{2}{7} \end{gathered}[/tex]The angle CQD is equal to angle RQS as both are vertically opposite angle.
Thus triangle CQD is similar to triangle SQR by SAS similarity.
Option D is correct.