Examples of a triangular based pyramid?

The net for one looks like this: http://educ.queensu.ca/~fmc/july2005/images/pyramid5.gif This is an image of one: http://homepage.eircom.net/~kevinsf/pix2/pyramidtri.gif The net for one looks like this: http://educ.queensu.ca/~fmc/july2005/images/pyramid5.gif This is an image of one: http://homepage.eircom.net/~kevinsf/pix2/pyramidtri.gif