Sort:  

Still listening... this is one of your longer videos. I am staring at your text as I listen... I GET what you were posting now. "pyramid with capstone" being 3 sides was what I was responding to. Yet now I see you were talking about the SHAPE of the letter A. I totally did not GET that until just now. Not sure if you cover this in your video or not. :)

Still watching your video it is longer than my post. I was responding to your text accompanying the video.