Question

21. A polyhedron has 7 vertices and 10
faces. How many edges it have.
O 16
O 17
O 15
O None​

Answer 1

Answer:

15

Step-by-step explanation:

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Answer 2

Answer:

EDGE = 15

Step-by-step explanation:

we can find it by Euler's formula :  F+V-E=2

since face (F) = 10

          vertices(V) = 7

therefore edge =  10 +7 -E = 2

                         => 10 + 7 - 2 = E

                         => 15 = E