Figure 8 - Definition and Overview

A figure 8 is an expression describing a geometric shape that resembles the number 8. It consists of a pair of closed loops that are connected on their exterior at a single point or along a short line or curve. It is also referred to as a "Figure of 8".

• A figure 8 is one of the components of figure skating.
• Figure 8 is the name of a 2000 album recorded by American singer-songwriter Elliott Smith.
• A Figure of 8 (also called a Flemish Knot), is a type of stopper knot.
• A Figure 8 Puffer is a common name for a breed of Pufferfish with the scientific name of Tetraodon biocellatus, from the Tetraodotidae family.
• The Figure 8 Orbit provides a stable solution to the three-body problem.
• Figure 8 Dribbling is an exercise drill that can be used when practicing basketball.
• Figure 8 Racing is a category of auto racing related to the demolition derby.
• An Analemma is a type of figure 8 that describes the position of the Sun over the course of a year.
• The Lemniscate of Jakob Bernoulli is a type of mathematical curve that resembles a figure 8; this is also the mathematical symbol for infinity.
• In Ouija, when the planchette makes a figure 8 more than once, it is supposed to represent contact by an evil spirit.