what does that ~ mean

Hi Solveit :)

what does that ~ mean

I wasn't sure so I looked it up :)

It is used in geometry and it means "is similar to"

Two shapes are similar if they have the same angles and the sides are in the same proportions.

That is, one is an enlargement of the other one.  (It doesn't matter if the second one is turned or reflected)

http://www.rapidtables.com/math/symbols/Basic_Math_Symbols.htm

Thanks Melody! i found the answer :)

What do you mean you found it? 

Do you mean you found it by yourself ?

no i just solved the question :)