Q:
# How many edges does a cylinder have?

A cylinder technically has two curved edges, but in mathematics, an edge is defined as a straight line. Therefore, a cylinder actually has no edges, no vertices and two faces.

Continue Reading
Credit:
Carlos Nieto
age fotostock
Getty Images

Cylinder originates from the Greek word "kulindros," meaning "roller" or "tumbler." It is a basic geometric shape, defined by its axis and enclosed surface area. In differential geometry, a cylinder's properties are more broad. When its cross section is an ellipse, parabola or hyperbola, a cylinder is called an elliptic, parabolic or hyperbolic cylinder, respectively.

Everyday uses of a cylinder are containers, the piston chamber in engines and bullet chambers.

Learn more about Geometry-
Q:
## How do you find the equation of a secant line?

A: A secant line of a curve is a straight line connecting two points on the curve. The equation for a line is given by the formula y = mx + b, where m equals ... Full Answer >Filed Under: -
Q:
## What does the "distance between two points" mean?

A: In math, the term "distance between two points" refers to the length of a straight line drawn between the two points on an x-y axis. The distance can be de... Full Answer >Filed Under: -
Q:
## What is a horizontal line?

A: A horizontal line is a straight line that goes from left to right, which can be open or closed in form. On a coordinate plane, a horizontal line runs paral... Full Answer >Filed Under: -
Q:
## What is a ray in geometry?

A: In geometry, a ray is a straight line extending infinitely from a fixed point. A ray is expressed using an arrow as its symbol (---). A ray cannot be measu... Full Answer >Filed Under: