TO EXPLORE IN AUGMENTED REALITY:
1) Open GeoGebra 3D app on your device.
2) Press the 3 horizontal bars (upper left corner). Select OPEN.
3) In the SEARCH TAB that appears, type V9cAn76T
Note this string of characters can be found in the URL here.
Be sure to either copy & paste this code or type it just the way you see it here.
4) The slider named n does the entire animation. Slide this completely to the right.
When in 3D view, you can move the white point (outside the pyramid) up or down to change its height.
You can also drag the large white points on the pyramid's base to adjust the base size.