Question

How many edges are there in a cylinder?

Answer 1

Hoot! You just asked your first question! Hang tight while I find people to answer it for you. You can thank people who give you good answers by clicking the 'Good Answer' button on the right!

Answer 2

2

Answer 3

2? how did you get it?

Answer 4

im going with assumption that a circle is 1 continuous edge
a cylinder has 2 circles on top and bottom

Answer 5

does a cylinder have edges?
its made up of h circles where h is the height

Answer 6

does circle have edge?

Answer 7

i dont think so

Answer 8

its debateable ;)

Answer 9

hmmmm.

Answer 10

i know a square, a rectangle have 4 edges

Answer 11

so how many does a sphere have?

Answer 12

Cut your finger on a tin can, and you will agree there is a edge.

Answer 13

yeah, you are right myinaya, they have 4.

Answer 14

there are 3 options:
No edges
one continuous edge
Infinitely many small edges

Answer 15

i think i will look it up on the internet

Answer 16

what is really the answer?

Answer 17

according to this one site
cylinders don't have edges or vertices
but it does have 2 faces

Answer 18

depends on your definition of what an edge is !!??

Answer 19

what are edges, then?

Answer 20

When finished, there should only be smooth edges.

Answer 21

?what do you mean?

Answer 22

hey cow i just post it already

Answer 23

cow is right it depends on your definition of those things
this site gives another answer well

Answer 24

http://wiki.answers.com/Q/How_many_faces_edges_and_vertices_does_a_cylinder_have

Answer 25

An edge is normally sharp, like the "cutting edge" but when manufacturing items that are used by humans, all edges should be smooth so one won't get hurt.

Answer 26

hikari : i dont see it

Answer 27

Unless the manufacturer is making knives, then edges should be sharp lol

Answer 28

http://openstudy.com/groups/mathematics/updates/4de811194c0e8b0ba037bbd8

Answer 29

yeah, actually all of you guys are correct./
It really depends on the definition of an edge.
But, as we all know, cylinders do not have edge.
But if we say that edge is the intersection of faces, then we can say that there is an infinite number of edges of a cylinder because a line is having no thickness.

Answer 30

you can say cylinder has 2 circular edges

Answer 31

yeah it can be, but again it depends on how are we going to define edge.

Answer 32

right

Answer 33

cylinders dont have edges......neither do circles btw

Answer 34

cylinders may have.

Answer 35

yeah.. it really depends on its definition. ^_^

Answer 36

pat18....i guess ur right.....

Edge: The line where two surfaces meet
It can also be the boundary of a shape, such as the circumference of a circle.

:D

Answer 37

ok i duno wat im doin...im posting answers eevrywhere...sry my bad

Answer 38

it is okay i87

Answer 39

This question does not have a simple answer.
A cylinder has 0 edges.
Same as the number of vertices it has.
It depends on how you define edge. If it is defined as a straight line segment, or the line segment created when two faced meet, then the answer would be:
Faces: -2
Edges: 0
Vertices: 0
There is a famous formula known as Euler's formula which says [V] - [E] - [F] = 2.
this simply means the number of vertices minus the number of edges plus the number of faces equals two. For example, a cube has 8 verticals, 12 edges and 6 faces so 8-12+6=2.

The main point of this very lengthy answer is that in math the definition is the starting point. To answer this question we must define what we mean by edge, vertex, and face. The answer will certainly change based on the definition. This happens all the time in math.

Answer 40

yeah, i agree.

Answer 41

:) good...that must mean your as smart as me..lol

Answer 42

1 because of eulers therum .. F+V=E+2 ... 2+1=1+2