On the theorem of the three perpendiculars
Jin-ichi Itoh
Kumamoto University, JapanJoël Rouyer
Romanian Academy, Bucharest, RomaniaCostin Vîlcu
Romanian Academy, Bucharest, Romania
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Cite this article
Jin-ichi Itoh, Joël Rouyer, Costin Vîlcu, On the theorem of the three perpendiculars. Elem. Math. 70 (2015), no. 2, pp. 71–78
DOI 10.4171/EM/277