A pyramid is a geometric shape with a polygonal base and triangular faces that converge at a single point, called the apex. Pyramids are common in architecture and design, with the most famous examples being the ancient pyramids of Egypt. Here's a quick overview:

Features:
Base: The bottom of the pyramid, which can have any polygonal shape (triangle, square, hexagon, etc.).
Faces: Triangular sides that connect each edge of the base to the apex.
Apex: The topmost point where the triangular faces meet.
Edges and Vertices: Edges are the lines formed where two faces meet; vertices are points where the edges converge.