Russian Translation(s) & Details for 'quadrilateral'

English Word: quadrilateral

Key Russian Translations:

• четырёхугольник /t͡ɕɪtɨˈrʲexʊɡɐlʲnʲik/ - [Formal, Mathematical context, Singular]

Frequency: Medium (This term is commonly used in educational and scientific contexts but not in everyday conversation.)

Difficulty: B2 (Intermediate level, as it involves specialized vocabulary from geometry; learners need familiarity with basic Russian noun declensions and scientific terminology.)

Pronunciation (Russian):

четырёхугольник: /t͡ɕɪtɨˈrʲexʊɡɐlʲnʲik/

Note on четырёхугольник: The stress falls on the third syllable ("rʲex"), which is a common feature in Russian compound words. Pronunciation can vary slightly by region, with softer palatalization in some dialects.

Audio: []

Meanings and Usage:

A polygon with four sides and four angles.

Translation(s) & Context:

• четырёхугольник - Used primarily in mathematical, geometric, or educational contexts to describe a four-sided shape; appropriate for formal writing or classroom discussions.

Usage Examples:

• Этот четырёхугольник имеет равные стороны и прямые углы.

  This quadrilateral has equal sides and right angles.

• В геометрии мы изучаем разные типы четырёхугольников, такие как квадрат и ромб.

  In geometry, we study different types of quadrilaterals, such as squares and rhombuses.

• Рисунок показывает неправильный четырёхугольник с разными длинами сторон.

  The drawing shows an irregular quadrilateral with sides of different lengths.

• Чтобы решить задачу, нам нужно вычислить периметр этого четырёхугольника.

  To solve the problem, we need to calculate the perimeter of this quadrilateral.

• В архитектуре часто используются симметричные четырёхугольники для дизайна зданий.

  In architecture, symmetrical quadrilaterals are often used for building designs.

Russian Forms/Inflections:

"Четырёхугольник" is a masculine noun in Russian, which follows the standard third-declension pattern for nouns ending in -ик. It is inflected based on case, number, and gender, with no irregularities. Below is a table of its declensions in the singular form:

Note: In the plural form, it becomes "четырёхугольники," with corresponding declensions (e.g., Genitive plural: четырёхугольников). This noun does not change in the plural for all cases but follows regular patterns.

Russian Synonyms/Antonyms:

• Synonyms:
  • квадрилатер (less common, used in more technical or borrowed contexts; implies a direct geometric term without emphasis on sides)
  • четырёхсторонник (a variant, but less precise and rarely used; suitable for informal explanations)
• Antonyms:
  • треугольник (triangle; highlights shapes with fewer sides)
  • пятиугольник (pentagon; for shapes with more sides)

Related Phrases:

• Прямоугольный четырёхугольник - A rectangular quadrilateral; refers to a shape with four right angles, commonly used in design and engineering.
• Правильный четырёхугольник - A regular quadrilateral; means a quadrilateral with equal sides and angles, like a square.
• Неправильный четырёхугольник - An irregular quadrilateral; describes a quadrilateral without equal sides or angles, often in mathematical problems.

Usage Notes:

When translating "quadrilateral" to Russian, "четырёхугольник" is the most precise and commonly accepted term in educational and scientific contexts. It directly corresponds to the English concept but is typically used in formal settings, such as textbooks or lectures. Be aware of grammatical agreement: as a masculine noun, it must agree in gender, number, and case with other elements in the sentence (e.g., adjectives like "квадратный" for square). If multiple translations exist, choose "четырёхугольник" for general purposes, but "квадрилатер" might be preferred in highly technical translations to retain an international flavor. Avoid using it in casual conversation, as it's not part of everyday vocabulary.

Common Errors:

• Confusing the declension: English learners often forget to change the ending in different cases. For example, incorrectly saying "в четырёхугольник" instead of the correct "в четырёхугольнике" (Prepositional case). Correct usage: Use the proper case to indicate location or relationship, as in "Я рисую четырёхугольник" (I am drawing a quadrilateral).

• Mixing with synonyms: Learners might overuse "квадрат" (square), thinking it means any quadrilateral, but "квадрат" specifically means a square. Error example: "Это квадрат" for a general quadrilateral; Correct: "Это четырёхугольник". This error stems from overgeneralization of similar English terms.

• Neglecting stress in pronunciation: Misplacing the stress, e.g., pronouncing it as /t͡ɕɪˈtɨrʲexʊɡɐlʲnʲik/ instead of /t͡ɕɪtɨˈrʲexʊɡɐlʲnʲik/, which can make the word sound unnatural to native speakers.

Cultural Notes:

In Russian culture and education, geometry terms like "четырёхугольник" are emphasized in school curricula, reflecting the influence of Soviet-era mathematics education, which prioritized logical and spatial reasoning. This term doesn't carry significant cultural connotations beyond its academic use, but it underscores Russia's strong tradition in science and engineering, where precise geometric concepts are foundational.

Related Concepts:

• треугольник (triangle)
• пятиугольник (pentagon)
• многоугольник (polygon)
• квадрат (square)