Question

Difference between circumsphere and insphere

Answer 1

In geometry, a circumscribed sphere of a polyhedron is a sphere that contains the polyhedron and touches each of the polyhedron's vertices.

In geometry, the inscribed sphere orinsphereof a convex polyhedron ... It is the largest sphere that is contained wholly within the polyhedron, and is dual to the dual polyhedron'scircumsphere.