A TETRAHEDRON HAS 4 VERTICES AND 6 EDGES . FIND THE NUMBER OF FACES IT HAS
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The tetrahedron has 4 faces
Given :
A tetrahedron has 4 vertices and 6 edges
To find :
The number of faces of the tetrahedron
Concept :
Euler’s formula for Polyhedron :
For polyhedron F + V = E + 2
Where F stands for number of faces , V stands for number of vertices , E stands for number of edges
Solution :
Step 1 of 2 :
Write down number of faces , number of vertices , number of edges
V = Number of vertices = 4
E = Number of edges = 6
F = Number of faces = ?
Step 2 of 2 :
Find number of faces
We use Euler’s formula
By Euler’s formula
F + V = E + 2
⇒ F + 4 = 6 + 2
⇒ F + 4 = 8
⇒ F = 8 - 4
⇒ F = 4
The tetrahedron has 4 faces
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