The sides of triangles do not have set names, except in the case of the right triangle (where one side opposite the right angle is called the hypotenuse). They are usually labâ¦elled arbitrarily a, b and c.
Mound Builders lived in the Ohio River Valley and in the Wisconsin area. Also, Mound Builders lived from the Great Lakes to the Gulf of Mexico and from the Mississippi and Missouri Rivers to the Appalachian mountains.
The mounds site, located seven miles outside of Spiro, Oklahoma, is the only prehistoric, American Indian archaeological site in Oklahoma open to the public. The mounds are one of the most important American Indian sites in the nation.