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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.