Triangle: meaning, definitions and examples
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triangle
[ ˈtraɪ.æŋ.ɡəl ]
geometric shape
A triangle is a three-sided polygon that consists of three edges and three vertices. The sum of the internal angles of a triangle always equals 180 degrees. Triangles can be classified based on their angle measures as acute, right, or obtuse, and by the length of their sides as equilateral, isosceles, or scalene. Triangles are fundamental in various fields, including mathematics, engineering, and architecture.
Synonyms
triangular shape, trigon
Examples of usage
- The triangle has three sides.
- We studied different types of triangles in math class.
- The roof was shaped like a triangle.
Translations
Translations of the word "triangle" in other languages:
🇵🇹 triângulo
🇮🇳 त्रिकोण
🇩🇪 Dreieck
🇮🇩 segitiga
🇺🇦 трикутник
🇵🇱 trójkąt
🇯🇵 三角形
🇫🇷 triangle
🇪🇸 triángulo
🇹🇷 üçgen
🇰🇷 삼각형
🇸🇦 مثلث
🇨🇿 trojúhelník
🇸🇰 trojuholník
🇨🇳 三角形
🇸🇮 trikotnik
🇮🇸 þríhyrningur
🇰🇿 үшбұрыш
🇬🇪 სამკუთხედი
🇦🇿 üçbucaq
🇲🇽 triángulo
Etymology
The term 'triangle' comes from the Latin word 'triangulum,' which means 'three-cornered.' This Latin term is derived from the prefix 'tri-' meaning 'three' and 'angulus' meaning 'angle.' The use of the triangle in geometry dates back to ancient civilizations, including the Egyptians and Greeks, who utilized its properties in construction, astronomy, and mathematics. The triangle's importance is also highlighted in the study of trigonometry, which is the branch of mathematics that deals with the relationships between the angles and sides of triangles. Over centuries, the triangle has remained a central figure in both theoretical and applied mathematics.
Word Frequency Rank
At #6,452 in frequency, this word belongs to advanced vocabulary. It's less common than core vocabulary but important for sophisticated expression.
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- 6449 duplicate
- 6450 rim
- 6451 sailing
- 6452 triangle
- 6453 possessing
- 6454 dramatically
- 6455 legacy
- ...