Incircle and excircles (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Incircle and excircles" in English language version.

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10loc.gov

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3archive.org

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1evansville.edu

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1uni-goettingen.de

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1forgottenbooks.com

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ams.org

mathscinet.ams.org

Franzsen, William N. (2011). "The distance from the incenter to the Euler line" (PDF). Forum Geometricorum. 11: 231–236. MR 2877263. Archived from the original (PDF) on 2020-12-05. Retrieved 2012-05-09..
Josefsson (2011, See in particular pp. 65–66.) Josefsson, Martin (2011), "More characterizations of tangential quadrilaterals" (PDF), Forum Geometricorum, 11: 65–82, MR 2877281, archived from the original (PDF) on 2016-03-04, retrieved 2023-03-14

archive.org

Johnson 1929, p. 182. Johnson, Roger A. (1929), "X. Inscribed and Escribed Circles", Modern Geometry, Houghton Mifflin, pp. 182–194
Johnson 1929, p. 189, #298(d). Johnson, Roger A. (1929), "X. Inscribed and Escribed Circles", Modern Geometry, Houghton Mifflin, pp. 182–194
Johnson 1929, p. 187. Johnson, Roger A. (1929), "X. Inscribed and Escribed Circles", Modern Geometry, Houghton Mifflin, pp. 182–194

dekovsoft.com

Dekov, Deko (2009). "Computer-generated Mathematics : The Gergonne Point" (PDF). Journal of Computer-generated Euclidean Geometry. 1: 1–14. Archived from the original (PDF) on 2010-11-05.

doi.org

Allaire, Patricia R.; Zhou, Junmin; Yao, Haishen (March 2012), "Proving a nineteenth century ellipse identity", Mathematical Gazette, 96: 161–165, doi:10.1017/S0025557200004277, S2CID 124176398.

evansville.edu

faculty.evansville.edu

Encyclopedia of Triangle Centers Archived 2012-04-19 at the Wayback Machine, accessed 2014-10-28.

fau.edu

forumgeom.fau.edu

"Bell, Amy, "Hansen's right triangle theorem, its converse and a generalization", Forum Geometricorum 6, 2006, 335–342" (PDF). Archived from the original (PDF) on 2021-08-31. Retrieved 2012-05-05.
Franzsen, William N. (2011). "The distance from the incenter to the Euler line" (PDF). Forum Geometricorum. 11: 231–236. MR 2877263. Archived from the original (PDF) on 2020-12-05. Retrieved 2012-05-09..
Christopher J. Bradley and Geoff C. Smith, "The locations of triangle centers", Forum Geometricorum 6 (2006), 57–70. http://forumgeom.fau.edu/FG2006volume6/FG200607index.html
Grinberg, Darij, and Yiu, Paul, "The Apollonius Circle as a Tucker Circle", Forum Geometricorum 2, 2002: pp. 175-182.
Stevanovi´c, Milorad R., "The Apollonius circle and related triangle centers", Forum Geometricorum 3, 2003, 187-195.
Emelyanov, Lev, and Emelyanova, Tatiana. "Euler’s formula and Poncelet’s porism", Forum Geometricorum 1, 2001: pp. 137–140.
Josefsson (2011, See in particular pp. 65–66.) Josefsson, Martin (2011), "More characterizations of tangential quadrilaterals" (PDF), Forum Geometricorum, 11: 65–82, MR 2877281, archived from the original (PDF) on 2016-03-04, retrieved 2023-03-14

forgottenbooks.com

Whitworth, William Allen. Trilinear Coordinates and Other Methods of Modern Analytical Geometry of Two Dimensions, Forgotten Books, 2012 (orig. Deighton, Bell, and Co., 1866). http://www.forgottenbooks.com/search?q=Trilinear+coordinates&t=books

loc.gov

lccn.loc.gov

Kay (1969, p. 140) Kay, David C. (1969), College Geometry, New York: Holt, Rinehart and Winston, LCCN 69012075
Altshiller-Court (1925, p. 74) Altshiller-Court, Nathan (1925), College Geometry: An Introduction to the Modern Geometry of the Triangle and the Circle (2nd ed.), New York: Barnes & Noble, LCCN 52013504
Altshiller-Court (1925, p. 73) Altshiller-Court, Nathan (1925), College Geometry: An Introduction to the Modern Geometry of the Triangle and the Circle (2nd ed.), New York: Barnes & Noble, LCCN 52013504
Kay (1969, p. 117) Kay, David C. (1969), College Geometry, New York: Holt, Rinehart and Winston, LCCN 69012075
Kay (1969, p. 201) Kay, David C. (1969), College Geometry, New York: Holt, Rinehart and Winston, LCCN 69012075
Kay (1969, p. 203) Kay, David C. (1969), College Geometry, New York: Holt, Rinehart and Winston, LCCN 69012075
Altshiller-Court (1925, p. 79) Altshiller-Court, Nathan (1925), College Geometry: An Introduction to the Modern Geometry of the Triangle and the Circle (2nd ed.), New York: Barnes & Noble, LCCN 52013504
Kay (1969, p. 202) Kay, David C. (1969), College Geometry, New York: Holt, Rinehart and Winston, LCCN 69012075
Altshiller-Court (1925, pp. 103–110) Altshiller-Court, Nathan (1925), College Geometry: An Introduction to the Modern Geometry of the Triangle and the Circle (2nd ed.), New York: Barnes & Noble, LCCN 52013504
Kay (1969, pp. 18, 245) Kay, David C. (1969), College Geometry, New York: Holt, Rinehart and Winston, LCCN 69012075

semanticscholar.org

api.semanticscholar.org

Allaire, Patricia R.; Zhou, Junmin; Yao, Haishen (March 2012), "Proving a nineteenth century ellipse identity", Mathematical Gazette, 96: 161–165, doi:10.1017/S0025557200004277, S2CID 124176398.

uni-goettingen.de

resolver.sub.uni-goettingen.de

Feuerbach, Karl Wilhelm; Buzengeiger, Carl Heribert Ignatz (1822), Eigenschaften einiger merkwürdigen Punkte des geradlinigen Dreiecks und mehrerer durch sie bestimmten Linien und Figuren. Eine analytisch-trigonometrische Abhandlung (Monograph ed.), Nürnberg: Wiessner.

web.archive.org

Encyclopedia of Triangle Centers Archived 2012-04-19 at the Wayback Machine, accessed 2014-10-28.
"Bell, Amy, "Hansen's right triangle theorem, its converse and a generalization", Forum Geometricorum 6, 2006, 335–342" (PDF). Archived from the original (PDF) on 2021-08-31. Retrieved 2012-05-05.
Franzsen, William N. (2011). "The distance from the incenter to the Euler line" (PDF). Forum Geometricorum. 11: 231–236. MR 2877263. Archived from the original (PDF) on 2020-12-05. Retrieved 2012-05-09..
Dekov, Deko (2009). "Computer-generated Mathematics : The Gergonne Point" (PDF). Journal of Computer-generated Euclidean Geometry. 1: 1–14. Archived from the original (PDF) on 2010-11-05.
Josefsson (2011, See in particular pp. 65–66.) Josefsson, Martin (2011), "More characterizations of tangential quadrilaterals" (PDF), Forum Geometricorum, 11: 65–82, MR 2877281, archived from the original (PDF) on 2016-03-04, retrieved 2023-03-14

wolfram.com

mathworld.wolfram.com

Weisstein, Eric W. "Contact Triangle." From MathWorld--A Wolfram Web Resource. http://mathworld.wolfram.com/ContactTriangle.html