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.
âIndian moundâ is the common name for a variety of solid structures erected by some of the indigenous peoples of the United States. Most Native American tribes did not build mounds. The majority were constructed in the Lower Southeast, Ohio River Valley, Tennessee River Valley and the Mississippi River Valley. Some types of shell mounds can be found along the entire length of the United Statesâ Atlantic Coast.