Question

Faces: 25
Vertices: 17
Edges: ?

43
41
39
40

Answer 1

Euler's formula states that V + F - E = 2

Answer 2

so it would be like 17+25-E=2

Answer 3

D

Answer 4

42-40=2

Answer 5

Am I right?

Answer 6

Yes.
V + F = E + 2
E = 40

Answer 7

Vertices: 11
Edges: 34
Faces: ? (1 point)

25
28
26
24

Answer 8

11+F+34=2

A.25 right?

Answer 9

Edges: 36
Faces: 22
Vertices: ? (1 point)

19
15
16
17

Answer 10

V+22-36=2

C.16 right

Answer 11

A.25 right? That is what I got.

Answer 12

Mario’s company makes unusually shaped imitation gemstones. One gemstone had 12 faces and 10 vertices. How many edges did the gemstone have? (1 point)

23 edges
22 edges
25 edges
20 edges

Answer 13

10+12-E=2

D.20

Answer 14

Am i doing these right? @Directrix

Answer 15

D.20 I got this.

Answer 16

Any more?