How do I prove if these are similar (if they are) on a flowchart?

Question

https://s3-us-west-2.amazonaws.com/c3po-media-dev/files/943ec440-259f-11e9-ab6b-d7741872f579/ccg_original.png

Answer 1

Two possible:

Marked angles are same side interiors.

VT || SN

Angles opposite are =

M = M

SSS

Sum angels in both triangles both add to 180

Unmaked angles in base are equal

SSS