In order to make a horizontal line is the tag <hr/> or </hr>?

Question

Sololearn shows that it is supposed to be </hr > in the lessons but when practicing it changes to <hr/>. Also the line doesn't appear

Answer 1

<hr>
or
<hr/>

the hr tag does not have a closing tag

Answer 2

Oh thank you Moshe Schnitzler

Answer 3

Noted, thank you Martin Taylor