See also
Circle,
Circumradius,
Excircles,
Inradius,
Radius
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References
Casey, J. A Sequel to the First Six Books of the Elements of Euclid, Containing an Easy Introduction
to Modern Geometry with Numerous Examples, 5th ed., rev. enl. Dublin: Hodges,
Figgis, & Co., 1888.Johnson, R. A. Modern
Geometry: An Elementary Treatise on the Geometry of the Triangle and the Circle.
Boston, MA: Houghton Mifflin, 1929.Mackay, J. S. "Formulas
Connected with the Radii of the Incircle and Excircles of a Triangle." Proc.
Edinburgh Math. Soc. 12, 86-105.Mackay, J. S. "Formulas
Connected with the Radii of the Incircle and Excircles of a Triangle." Proc.
Edinburgh Math. Soc. 13, 103-104.Referenced on Wolfram|Alpha
Exradius
Cite this as:
Weisstein, Eric W. "Exradius." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/Exradius.html
Subject classifications