Question

for each solid, decide if it is a polyhedron. then name the solid. name: select not a polyhedron polyhedron name: select not a polyhedron polyhedron name: select not a polyhedron polyhedron name: select not a polyhedron polyhedron

Explanation:

Step1: Recall polyhedron definition

A polyhedron is a three - dimensional solid made up of flat polygonal faces, straight edges and sharp vertices.

Step2: Analyze first solid (rectangular - like)

It has flat faces, straight edges and vertices. It is a polyhedron. Name: rectangular prism.

Step3: Analyze second solid (cylinder)

It has curved surfaces. So it is not a polyhedron. Name: cylinder.

Step4: Analyze third solid (pyramid - like)

It has flat faces, straight edges and vertices. It is a polyhedron. Name: square pyramid.

Step5: Analyze fourth solid (triangular - prism - like)

It has flat faces, straight edges and vertices. It is a polyhedron. Name: triangular prism.

Answer:

1. Polyhedron, Rectangular prism
2. not a Polyhedron, Cylinder
3. Polyhedron, Square pyramid
4. Polyhedron, Triangular prism