Question

Find the number of edges in a polyhedron which has 9 vertices and 9 faces.

Answer 1

Answer:

using the Euler formula =F+V-E=2

Step-by-step explanation:

=>9+9-E=2

=>18-E=2

=> -E=2-18

=>+E=+16

=>E=16

Answer 2

16 edges

Step-by-step explanation:

given :

number of faces = 9

number of vertices = 9

we have to find  the number of edges then

using the Euler's formula

F + V = E + 2

where F is faces , V is vertices and E is edges of the polyhedron

then

F + V = E + 2

9+9 =E + 2

18 -2 = E

E= 16

hence , The number of edges in this Polyhedron is 16

#Learn more:

if a polyhedron has 6 vertices, edges 9. Find the number of faces

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