In HTML each tag is included within?

In HTML all tags are included within the angled braces "<>" for example the tag to set the font of the text displayed in a web page is the "Font" tag and if you want to use it in your web page you will use it like:

<Font> </Font>

The Font tag has attributes that you can set in the first set of angled braces <Font> and all the text that is typed until the </Font> tag is encountered.