a pentagonal pyramid is a shape with a base of a triangle, and triangles forming up to the point
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They both have at least 1 pentagon in them.
There are a number of possible 7-sided polyhedra. Three that come immediately to mind are: a hexagonal pyramid, a pentagonal prism, a "stretched" triangular pyramid (triangular base, rectangular sides, and then triangular faces meeting at an apex).
A regular pentagonal pyramid is composed of five equilateral triangles and one regular pentagon. Each equilateral triangle has three angles of 60 degrees each. The regular pentagon has five internal angles of 108 degrees each.
6, 10, 6That's an interesting question!This solid has a base which is a pentagon, and an edge rising from each vertex of the pentagon to meet at a single point.Faces: 1: the pentagon, and 5 slanting = 6Edges: 5 on the pentagon and five rising = 10Vertices: 5 on the pentagon and 1 at the top = 6.You can check this answer using Euler's formula. In any polyhedron, F+V-E = 2.In the pentagonal pyramid, 6+6-10=2. Check!
A house can look like a pentagonal prism, they aren't really used for anything (Well what can you imagine?). Hope it helped ;)