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.
Egyptologists Mark Lehner and Zahi Hawass have been trying to solve the puzzle of where the 20,000 or 30,000 laborers who are thought to have built the Pyramids lived. Ultimately, they hope to learn more about the workforce, their daily lives, and perhaps where they came from.