Someone can solve this discussion . I need it well done. I do not understand this discussion.

This unit focused, in part, on relationships in triangles. A triangle is the simplest type of polygon and is frequently used in construction. Explain why triangles are often used to build bridges, roofs, buildings, and other structures. Which properties of a triangle make it a desirable geometric shape for these applications? Which type of triangle is best? Why is the triangle preferred over other types of polygons? Explain.