Open Sans font in mac os x

Question

Is the "Open Sans" font included by default in mac os x?

I tried to search "Open Sans" by pressing CMD + F with the filter system files included
but I cannot find it, and also in the font book I have not the "Open Sans" font...

But if I go to the chrome or firefox default font settings, I can choose "Open Sans" from the dropdown...

So how this is possible?

How can I find that font in the system and remove it, and reinstall later if I will need it again?

Answer 1

Try this:

1. Go to The Google Fonts Page.
2. Open Sans will be added to your fonts collection.
3. Then click download icon and you'll have a .zip file option with all of Open Sans variations in it.

You can them install them using fontbook.