wordpress

How do I write a mathematical arc in latex like in the picture? I tried using the notation: \(\wideparen{A B}\) or \(\arc{A B}\) but it can't be displayed. Is it necessary to add an additional package?

I just installed the h5p plugin for the very first time and I'm unable to create any h5p content. It seems the libraries are unable to load?

Newbie... wondering if what I need to do is possible, haven't been able to find a definitive answer here or in documentation.

Here's what I need to be able to do:

1) Show a short intro video, which ends by showing two (or more) buttons.

2) Clicking one of the two buttons starts another video playing, a different one depending on which button is clicked.

3) In that first intro video's end screen, no videos will play automatically, one of the buttons must be clicked first.