Below is an example of a geometry video I made for my students. Most of this video is linear, in that I talk and show things in the video and there is not interaction from the viewer. Around minute 8:29, the interactivity starts. This video was created with Camtasia 2019 (see Technologies to Create Videos page for more information) and includes hotspots and quizzes.
This is a link to a video I found on YouTube. I added several different types of interactivity with PlayPosit (see Technologies to Create Videos page for more information). PlayPosit does not allow embedding of their videos so I had to use a link to their site.
This is another video I found while searching Edpuzzle's (see Technologies to Create Videos page for more information) content. I added some questions and a note to this video.