Tuesday, July 17, 2007
TETRAHEDRON by susan
Our tetrahedron was made in a group of 3 COOL girls on 7/13/07 by Jenny T., Muting C., and Susan L.. For our group to make or construct this, we needed 3 different color yarns, 3 needles, and a lot of straws with different measurements that I don't know what is the measures. So when connecting some straws with the string, it started to form a triangle that was equilateral. When finish when making the triangle, we connected more straws by the strings and got another triangle but it was bigger then the first triangle we made. It was also all equilateral. When we connecting straws that was concurrency things together to make a figure were all equilangular triangles. Also when it was concurrent it was also inverse, because we were making a triangle inside the bigger one that is surrounding it and so this is also a polyhedra and also that its centroid is the same. When connecting them, it kind of different for the triangles because the triangles that are surrounding the small regular one. Inside of my tetrahedron, i see an orthocenter is the same for ALL triangles. The incenter was also the same as orthocenter but then it was blocked by one of the straws that were connecting the small one to the one that is surrounding the small triangle. The circumcenter was also used because it was the incenter and the centroid because it is the tetrahedron's triangles with all equilateral. DOES THE TETRAHEDRON LOOK COMPLICATED TO MAKE BUT IT IS VERY EASY ONCE YOU HAVE THE INSTRUCTIONS AND YOU JUST NEEDS TO FOLLOW IT. SO DON'T THINK THAT LOOK COMPLICATED TO MAKE!!!!