Research Article

An Incircle, Circumcircle, Excircle and Apollonius Circle of a Triangle in the Maximum Plane

Volume: 7 Number: 2 December 29, 2025
EN TR

An Incircle, Circumcircle, Excircle and Apollonius Circle of a Triangle in the Maximum Plane

Abstract

Classical Euclidean geometry places significant emphasis on circles related to triangles, such as the incircle, circumcircle, excircle, and Apollonius circles. Each of these circles shows important features of the triangle. As new types of geometry were developed, these classic shapes were looked at again in different ways, leading to new mathematical ideas. One of these new geometries is called maximum plane geometry, which uses a different way to measure distances. In this geometry, circles take the form of axes-aligned squares. This creates both similarities and differences compared to circles in regular Euclidean geometry. This paper investigates the existence and uniqueness of these types of circles in maximum plane geometry and analyzes their properties. By clearly defining them and looking at their effects, the paper tries to build on old results, show how they are different, and find uses in areas like computational geometry and discrete mathematics.

Keywords

References

  1. Salihova, S. (2006). On the geometry of maximum metric (in Turkish). Doctoral Dissertation, Eskişehir Osmangazi University, Eskişehir.
  2. Ermiş , T., & Kaya, R. (2015). On the isometries of 3-dimensional maximum spaces. Konuralp Journal of Mathematics, 3(1), 103–114.
  3. Ermiş, T., & Gelişgen, Ö. (2015). On the area of a triangle in R^2_M . Afyon Kocatepe Universitesi Fen ve Mühendislik Bilimleri Dergisi, 15(1), 7–14.
  4. Can, Z., Colak, Z., Yildirim, K., & Gelişgen, Ö. (2021). A note on some distance formulae in 3-dimensional maximum space. Journal of Mahani Mathematical Research Center, 10(1), 95–102.
  5. Ermiş, T., & Gelişgen, Ö. & Kaya, R. (2012). On Taxicab incircle and circumcircle of a triangle. KoG, 16(1), 3–12.
  6. Ermiş, T., & Gelişgen, Ö. & Ekici, A. (2018). A Taxicab version of a triangles Apollonius circle. Journal of Mahani Mathematical Research Center, 7(1), 25–36.
  7. Bahuaud, E., Crawford, S., Fish, A., Helliwell, D., Miller, A., Nungaray, F., Shergill, S., Tiffay, J., & Velez, N. (2020). Apollonian sets in Taxicab geometry. Rocky Mountain J. Math., 50(1), 25–39.
  8. Palazoğlu, A. (2022). Investigation of Apollonius circles and Apollonius sets in maximum plane Geometry (in Turkish). Master’s Thesis, Eskişehir Osmangazi University, Eskişehir

Details

Primary Language

English

Subjects

Algebraic and Differential Geometry

Journal Section

Research Article

Publication Date

December 29, 2025

Submission Date

August 20, 2025

Acceptance Date

December 12, 2025

Published in Issue

Year 2025 Volume: 7 Number: 2

APA
Gelişgen, Ö., & Palazoğlu, A. (2025). An Incircle, Circumcircle, Excircle and Apollonius Circle of a Triangle in the Maximum Plane. Hagia Sophia Journal of Geometry, 7(2), 29-45. https://izlik.org/JA82TH88TX
AMA
1.Gelişgen Ö, Palazoğlu A. An Incircle, Circumcircle, Excircle and Apollonius Circle of a Triangle in the Maximum Plane. HSJG. 2025;7(2):29-45. https://izlik.org/JA82TH88TX
Chicago
Gelişgen, Özcan, and Aylin Palazoğlu. 2025. “An Incircle, Circumcircle, Excircle and Apollonius Circle of a Triangle in the Maximum Plane”. Hagia Sophia Journal of Geometry 7 (2): 29-45. https://izlik.org/JA82TH88TX.
EndNote
Gelişgen Ö, Palazoğlu A (December 1, 2025) An Incircle, Circumcircle, Excircle and Apollonius Circle of a Triangle in the Maximum Plane. Hagia Sophia Journal of Geometry 7 2 29–45.
IEEE
[1]Ö. Gelişgen and A. Palazoğlu, “An Incircle, Circumcircle, Excircle and Apollonius Circle of a Triangle in the Maximum Plane”, HSJG, vol. 7, no. 2, pp. 29–45, Dec. 2025, [Online]. Available: https://izlik.org/JA82TH88TX
ISNAD
Gelişgen, Özcan - Palazoğlu, Aylin. “An Incircle, Circumcircle, Excircle and Apollonius Circle of a Triangle in the Maximum Plane”. Hagia Sophia Journal of Geometry 7/2 (December 1, 2025): 29-45. https://izlik.org/JA82TH88TX.
JAMA
1.Gelişgen Ö, Palazoğlu A. An Incircle, Circumcircle, Excircle and Apollonius Circle of a Triangle in the Maximum Plane. HSJG. 2025;7:29–45.
MLA
Gelişgen, Özcan, and Aylin Palazoğlu. “An Incircle, Circumcircle, Excircle and Apollonius Circle of a Triangle in the Maximum Plane”. Hagia Sophia Journal of Geometry, vol. 7, no. 2, Dec. 2025, pp. 29-45, https://izlik.org/JA82TH88TX.
Vancouver
1.Özcan Gelişgen, Aylin Palazoğlu. An Incircle, Circumcircle, Excircle and Apollonius Circle of a Triangle in the Maximum Plane. HSJG [Internet]. 2025 Dec. 1;7(2):29-45. Available from: https://izlik.org/JA82TH88TX