Bend (Curvature)

Given four mutually tangent circles, their bends are defined as the signed Curvatures of the Circles.If the contacts are all external, the signs are all taken as Positive, whereas if one circle surrounds the otherthree, the sign of this circle is taken as Negative (Coxeter 1969).

References

Coxeter, H. S. M. Introduction to Geometry, 2nd ed. New York: Wiley, pp. 13-14, 1969.

• Enantiomorph
• Encoding
• Endogenous Variable
• Endomorphism
• Endraß Octic
• Energy
• En-Function
• Engel's Theorem
• Enneacontagon
• Enneacontahedron
• Enneadecagon
• Enneagon
• Enneagonal Number
• Enneakaidecagon
• Enneper's Minimal Surface
• Enneper's Negative Curvature Surfaces
• Enneper-Weierstraß Parameterization
• Enormous Theorem
• Enriques Surfaces
• Entire Function
• Entringer Number
• Entropy
• Entscheidungsproblem
• Enumerative Geometry
• Envelope