5to8.
http://wiki.answers.com/Q/What_is_the_ratio_of_ver...

1. Create a triangle pattern. Draw an equilateral triangle (a triangle with all sides of the same length) on tagboard using a ruler. Make this whatever size you like; the height of
http://www.ehow.com/how_6402957_makesquarebased...

Try a search on yahoo.com for 'square pyramid + formulas" Found many with detailed drawings and formulas. You might need to work backwards using known measurements.
http://answers.yahoo.com/question/index?qid=201205...

A pyramid with a square base has 8 edges. 4 on the base and 4
http://www.chacha.com/question/howmanyedgesdoes...
