Какое наименьшее количество проволоки нужно, чтобы изготовить модель четырёхугольной пирамиды, показанную на рисунке?

The image shows a wireframe model of a square pyramid. A square pyramid has 4 edges forming the base and 4 edges connecting the base vertices to the apex. Therefore, a total of 8 edges are needed. The question asks for the minimum amount of wire, implying each edge is made from one piece of wire. Thus, 8 pieces of wire are required.