English → Latin
“triangle” in Latin
triangulustriangular, three-cornered, three-sidedtrigōnustrigonal; three-angled; having three anglesdiagōnālisdiagonal
The English word triangle itself goes back to Latin trēs, through triangulum.
Riddle & Arnold A Copious and Critical English–Latin Lexicon, 1864
triangle
triangulum: trigonum: figura triquetra. An equilateral triangle, trigonum aequis or paribus lateribus: a right-angled triangle, trigonum orthogonium. To divide a square by a diagonal line into two equal triangles, quadratum linea diagonia, or diagonali, in duo trigona aequa magnitudine dividere: to construct an equilateral triangle on a given line, in data linea triangulum aequis lateribus constituere.
Quick answer
- What is the Latin word for triangle?
- The usual Latin words for “triangle” are triangulus, trigōnus, diagōnālis. The right choice depends on the sense; see the distinctions below.
Entry from J. E. Riddle & T. K. Arnold, A Copious and Critical English–Latin Lexicon (rev. C. Anthon, New York: Harper, 1864), digitised by Fergus J. P. Walsh, CC BY-SA 4.0; Latin markup adapted by latindictionary.co.