Etymology of the English word triangle
the English word
trianglederived from the Classical Latin word
triangulum (triangle)
derived from the Latin word
angulus (angle; angle, apex; corner)
using the Latin prefix
tri-derived from the Classical Latin word
tres (three)
derived from the Proto-Indo-European root
*trei-Date
The earliest known usage of triangle in English dates from the 14th century.
Cognates
Dutch
triangel, French
triangle, German
Triangel, Italian
triangolo, Italian
triangulo, Latin
triangulum, Norwegian
triangel, Spanish
triangulo, Swedish
triangelUsage
Word found in Modern English
