Russian Translation(s) & Details for 'quadrangle'

English Word: quadrangle

Key Russian Translations:

• четырёхугольник [t͡ɕɪtɨˈrʲexʊɡɐlʲnʲɪk] - [Formal, used in mathematical or geometric contexts]

Frequency: Low (This term is not commonly used in everyday Russian conversation; it appears primarily in academic, scientific, or technical discussions.)

Difficulty: B2 (Intermediate level, as it involves specialized vocabulary related to geometry; learners at this level should be familiar with basic noun declensions and technical terms.)

Pronunciation (Russian):

четырёхугольник: [t͡ɕɪtɨˈrʲexʊɡɐlʲnʲɪk]

Note on четырёхугольник: The stress falls on the third syllable ("го"), and the initial "ч" is a voiceless palatal affricate, which can be challenging for English speakers. Pronunciation may vary slightly in fast speech.

Audio: []

Meanings and Usage:

Meaning 1: A four-sided polygon or geometric shape

Translation(s) & Context:

• четырёхугольник - Used in formal mathematical contexts to describe a quadrilateral shape, such as in geometry textbooks or technical discussions. Context: Academic or scientific writing.

Usage Examples:

• Русский пример: В геометрии четырёхугольник определяется как фигура с четырьмя сторонами.

  English Translation: In geometry, a quadrangle is defined as a shape with four sides.

• Русский пример: Этот четырёхугольник имеет равные стороны, что делает его квадратом.

  English Translation: This quadrangle has equal sides, making it a square.

• Русский пример: Ученики изучают типы четырёхугольников, такие как трапеция и ромб.

  English Translation: Students study types of quadrangles, such as trapezoids and rhombuses.

• Русский пример: В архитектуре четырёхугольник часто используется для проектирования оснований зданий.

  English Translation: In architecture, a quadrangle is often used for designing building foundations.

• Русский пример: Геометрический четырёхугольник может быть выпуклым или вогнутым, в зависимости от углов.

  English Translation: A geometric quadrangle can be convex or concave, depending on the angles.

Meaning 2: A courtyard or open space surrounded by buildings (e.g., in a university setting)

Translation(s) & Context:

• четырёхугольник - Less common in this sense; more often, "квад" or descriptive phrases are used, but "четырёхугольник" can apply in formal descriptions. Context: Historical or architectural discussions.

Usage Examples:

• Русский пример: Двор университета представляет собой большой четырёхугольник, окружённый корпусами.

  English Translation: The university courtyard is a large quadrangle surrounded by buildings.

• Русский пример: В старых европейских городах четырёхугольник служит местом для собраний.

  English Translation: In old European cities, a quadrangle serves as a place for gatherings.

Russian Forms/Inflections:

"Четырёхугольник" is a masculine noun in Russian, and it follows the standard declension pattern for nouns ending in -ик. It is inflected based on case, number, and gender. Below is a table outlining its key inflections:

Note: This noun does not have irregular forms, making it relatively straightforward for learners once basic declension rules are understood.

Russian Synonyms/Antonyms:

• Synonyms:
  • квадрилатер (more technical, used in advanced mathematics)
  • простой многоугольник (simple polygon, with a subtle difference in implying regularity)
• Antonyms:
  • треугольник (triangle)
  • пятиугольник (pentagon)

Related Phrases:

• Правильный четырёхугольник - A regular quadrangle (e.g., a square); used in precise geometric descriptions.
• Неправильный четырёхугольник - An irregular quadrangle; common in discussions of non-standard shapes.
• Закрытый четырёхугольник - A closed quadrangle; refers to a shape with no open sides, often in topology.

Usage Notes:

In Russian, "четырёхугольник" directly corresponds to the English "quadrangle" in geometric contexts but is more formal and less colloquial. It is typically used in written or educational settings rather than everyday speech. When choosing between translations, opt for "четырёхугольник" in technical discussions, but be aware of its inflections to ensure grammatical accuracy. For example, in sentences involving possession or direction, always decline the noun appropriately. English learners should note that Russian geometry terms often emphasize precision, so context is key to avoiding ambiguity.

Common Errors:

• Error: Using "квадрат" (square) as a direct synonym for "quadrangle," which is incorrect because "квадрат" specifically means a square with equal sides.
  Correct Usage: "Этот четырёхугольник не является квадратом." (This quadrangle is not a square.)
  Explanation: This mistake stems from overgeneralization; always check for equality of sides.
• Error: Failing to decline the noun, e.g., saying "в четырёхугольник" instead of "в четырёхугольнике" (in the quadrangle).
  Correct Usage: "В четырёхугольнике есть четыре угла." (In the quadrangle, there are four angles.)
  Explanation: Russian requires case agreement, so prepositional case is essential in locative phrases.

Cultural Notes:

In Russian culture and education, geometric terms like "четырёхугольник" are emphasized in STEM fields due to the historical influence of Russian mathematicians like Nikolai Lobachevsky. This term may evoke connotations of rigorous academic traditions, as geometry has been a cornerstone of Russian schooling since the Soviet era.

Related Concepts:

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