You polyhedraare geometric figures space formed by three basic elements: faces, edges and vertices.
To identify a polyhedron, just check if the sides that make up the figure are formed only by straight segments and are classified as polygons. On the other hand, if the figure has curves or rounded parts, it is not a polyhedron.
Now that we know how to recognize a polyhedron, how about learning about each of its elements?
Elements of a polyhedron
You elements of a polyhedron they are: faces, edges and vertices.
faces
The faces of a polyhedron are each of the sides that form it, which can be: triangles, squares, rectangles, etc.
Edges
The edges of a polyhedron are the straight segments that form each of its faces.
vertices
The vertices of a polyhedron are the meeting points between each of the edges.
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There are several types of polyhedra, they are classified according to the flat figures that form them. In the figure above we have a cube, it is a polyhedron that has 6 faces, 12 edges and 8 vertices.
Let's see now about some specific types of polyhedra and their elements.
Elements of a prism
You prisms are polyhedra that have two faces that are congruent and are located in distinct parallel planes, they are called bases. The other faces are called side faces.
You elements of a prism they are:
Elements of a Pyramid
Pyramids are polyhedra formed by straight line segments that start from a polygonal base to a fixed point located on a different plane.
You elements of a pyramid they are:
You may also be interested:
- Paving stone
- Cylinder
- Cone
- Planning of geometric solids
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