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.
Moundbuilders. Ceremonial centers built by American Indians from about 2,200 to 1,600 years ago existed in what is now Ohio, Indiana, Illinois, Wisconsin, Minnesota, and Michigan, as well as elsewhere.