Can three figures be similar? If so, then would they also have the same measurements, such as the corresponding angles should be equal and the ration of corresponding sides are equal?

Answer 1

Of course, three figures can be similar!

Of course, you need to define similar, but I think the extension of the definition of similar triangles is fairly straightforward.

Similarity should be a transitive property, i.e.

if figure A is similar to figure B and figure B is similar to figure C, then figure A is similar to figure C.