Hajja, Mowaffaq; Krasopoulos, Panagiotis T.; Martini, Horst The median triangle theorem as an entrance to certain issues in higher-dimensional geometry. (English) Zbl 1502.51006 Math. Semesterber. 69, No. 1, 19-40 (2022). Reviewer: Cătălin Barbu (Bačau) MSC: 51M04 PDFBibTeX XMLCite \textit{M. Hajja} et al., Math. Semesterber. 69, No. 1, 19--40 (2022; Zbl 1502.51006) Full Text: DOI
Hajja, Mowaffaq; Martini, Horst Concurrency of the altitudes of a triangle. (English) Zbl 1291.51012 Math. Semesterber. 60, No. 2, 249-260 (2013). Reviewer: Antonio M. Oller (Zaragoza) MSC: 51M04 51-03 01A20 01A30 51M15 51N20 PDFBibTeX XMLCite \textit{M. Hajja} and \textit{H. Martini}, Math. Semesterber. 60, No. 2, 249--260 (2013; Zbl 1291.51012) Full Text: DOI
Martini, Horst On the theorem of Napoleon and related topics. (English) Zbl 0864.51009 Math. Semesterber. 43, No. 1, 47-64 (1996). Reviewer: R.Koch (München) MSC: 51M04 PDFBibTeX XMLCite \textit{H. Martini}, Math. Semesterber. 43, No. 1, 47--64 (1996; Zbl 0864.51009) Full Text: DOI