en.wikipedia.org/wiki/Cylinder

If the elements of the **cylinder** are perpendicular to the planes containing the
**bases**, the **cylinder** is a right **cylinder** , otherwise it is called an oblique **cylinder** . If
the **bases** are disks (regions whose boundary is a circle) the **cylinder** is called a
**circular cylinder** . In some elementary treatments, **a cylinder** always means a
**circular** ...

www.answers.com/Q/A_cylinder_is_a_polyhedron_with_circular_bases

How many **circular base** does **a cylinder** have? **A cylinder** has two **bases** that
have a round shape.Note: There are comments associated with this question.
http://wiki.answers.com/Q/How_many_bases_does_a_cylinder_have#ixzz1n…
1rF2HzE ...

www.math.com/school/subject3/lessons/S3U4L4GL.html

In this unit we'll study three types of space figures that are not **polyhedrons**.
These figures have curved surfaces, not flat faces. **A cylinder** is similar to a prism,
but its two **bases** are circles, not polygons. Also, the sides of **a cylinder** are curved
, not flat. A cone has one **circular base** and a vertex that is not on the **base**.

www.math.com/school/subject3/lessons/S3U4L4DP.html

In this lesson, we study some common space figures that are not **polyhedra**.
These figures have some things in common with **polyhedra**, but they all have
some curved surfaces, while the surfaces of a **polyhedron** are always flat. First,
the **cylinder**. The **cylinder** is somewhat like a prism. It has parallel congruent
**bases**, but its ...

mathforum.org/library/drmath/view/65102.html

It is called "**circular**" because its **base** is **circular**; more generally, you can make **a**
**cylinder** from ANY closed plane curve, not just a circle. And if that ... But a (
**circular**) **cylinder** is not a prism, and a (**circular**) cone is not a pyramid, because
the prism and the pyramid must be **polyhedra**, with flat sides. You can ...

maths.ac-noumea.nc/polyhedr/start_.htm

different definitions of the **polyhedra**. ... Thus **a cylinder** is not a **polyhedron** for
several reasons: its lateral surface is not plane, its **bases** are not polygons, finally
it has no vertex! No faces, no edges, no vertices, it couldn't be worse! The
simplest ... three solids are not **polyhedra circular** right **cylinder** - **circular** right
cone - ball ...

www.montereyinstitute.org/courses/DevelopmentalMath/COURSE_TEXT2_RESOURCE/U07_L3_T1_text_final.html

**Polyhedrons** are shapes that have four or more faces, each one being a polygon.
... A **polyhedron** that has three pairs of congruent, rectangular, parallel faces. ...
**Cylinder**. A solid figure with a pair of **circular**, parallel **bases** and a round, smooth
face between them. Cone. A solid figure with a single **circular base** and a round,
...

virtualgeometryclass.weebly.com/3-d-shapes.html

**CYLİNDER**. **A cylinder** is a closed solid that has two parallel (usually **circular**)
**bases** connected by a curved surface. *It has a flat **base** and a flat top *The **base**
is the same as the top, and also in-between *It has one curved side *Because it
has a curved surface it is not a **polyhedron**.

www.emsisd.com/cms/lib/TX21000533/Centricity/Domain/1090/Solid_Geometry.ppt

It is a **polyhedron**. **Cylinder**. **A cylinder** is a solid object with: * two identical flat
**circular** or elliptical ends * and one curved side. Cone. A solid. (3-dimensional)
object that has a **circular base** and one vertex. Prisms & Pyramids. Type.
Examples. Properties. Triangular Prism. ○ 5 faces. 2 triangular **bases**. 3
rectangular faces.