SOLUTION: determine the number of face vertices and edges of the solids

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Question 142837This question is from textbook geometry
: determine the number of face vertices and edges of the solids This question is from textbook geometry

Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!
notice that:
Each solid has flat sides called faces.
Each solid has edges to connect the faces.
Each solid has vertices+that connect the edges.
There are many different solid+shapes that are polyhedra. You can examine the shapes and count the number of faces, edges, and vertices for each.
There are only+five regular polyhedra. This means that there are only five solids in which
all of the faces are congruent regular polygons.
These five regular polyhedra are called the Platonic+Solids. The Platonic Solids are:
the tetrahedron which has 4 equilateral triangles as faces;
the hexahedron which has 6 squares as faces;
the octahedron which has 8 equilateral triangles as faces;
the dodecahedron which has 12 equilateral pentagons as faces;
and the icosahedron which has 20 triangles as faces.
Euler characteristic: there is a relation among the number of edges E, vertices V, faces F
x=V+-+E+%2B+F=2+ This result is known as Euler%27s+formula, and can be applied not only to polyhedra but also to embedded planar graphs.