τριγωνικός
From LSJ
Κύριε, βοήθησον τὸν δοῦλον σου Νῖλον κτλ. → Lord, help your slave Nilos ... (mosaic inscription from 4th-cent. church in the Negev)
English (LSJ)
ή, όν,
A triangular, Ptol.Tetr.38, Iamb. in Nic.p.58P.; πυραμίδες, on triangular base, Nicom.Ar.2.14. Adv. -κῶς An.Ox. 3.195.
Greek (Liddell-Scott)
τρῐγωνικός: -ή, -όν, ὅμοιος τριγώνῳ, ἀποτελῶν τρίγωνον, Ἰάμβλ., Πτολ. - Ἐπίρρ. -κῶς, Ἀνέκδ. Ὀξων. τ. 3, σ. 195.
