I'm kinda confused on the way similarity works, could someone help with this problem?

If the sides of one triangle are lengths 2, 4 and 6 and another triangle has sides of lengths 3, 6 and 9, then the triangles are similar.

It's True or False.

Question

I'm kinda confused on the way similarity works, could someone help with this problem? 

If the sides of one triangle are lengths 2, 4 and 6 and another triangle has sides of lengths 3, 6 and 9, then the triangles are similar.

It's True or False.

koikkara · Answer

$\color{red}{~\star~``Welcome~to~Open~Study~!!"~\star~}$ @Skrilluh

Hello, Can You Please Say Your opinion ? 

Because Clearly $\large\sf\color{red}{\underline{\href{ /code-of-conduct}{code~of~conduct}}}$ of $Open~Study~says:$ $\color{darkblue}{~'Answer's~With~Strong~Statements~are~Only~Appreciated~!!}$

anonymous · Answer

I was thinking it's true...but I never got ratios or similarities.

koikkara · Answer

@Skrilluh What make you think its true...so that i can spot your mistake !!

anonymous · Answer

It just seems like a similarity to me. It goes up by 1, 2, then 3.