



 
Hi Karen, I drew a sketch of your tipi. RS is one side of the base, M is the midpoint of RS, B is the base of the central pole and T is its tip. The length of TB is 5 feet and the length of BM is 3 feet. Triangle TBM is a right triangle so Pythagoras theorem gives is
and hence
Now turn your attention to the hexagonal base. The measure of angle SBR is 360^{o}/6 = 60^{o}. Thus the measure of angle SBM is 30^{o} and the measure of angle MSB is 60^{o}. You know the length of BM is 3 feet and a little knowledge of trigonometry tells you that the length of MS is √3 feet. Hence the triangular fabric piece TRS has base length 2 √3 = 3.46 feet or 5 feet 6 inches and height MT 5 feet 10 inches. If you want to know the length of the side TS you can use Pythagoras theorem again with triangle TMS to get
and hence
Good luck i this project,  


Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences. 