Final answer:
A pyramid is the solid that consists of a polygon as its base, a point not in the same plane as the base, and shares all points between them.
Step-by-step explanation:
The solid that consists of a polygon, a point not in the same plane as the polygon, and shares all points between them is a pyramid.
A pyramid is a three-dimensional solid shape with a polygon as its base and a point called the apex that is not in the same plane as the base. All the points between the base and the apex are connected by triangular faces.
For example, a square pyramid has a square as its base and four triangular faces that meet at the apex.