đường chéo

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The Vietnamese word "đường chéo" translates to "diagonal" in English, particularly in the context of mathematics and geometry.

Basic Explanation:

• "Đường chéo" refers to a line that goes from one corner of a shape (like a square or rectangle) to the opposite corner. It is not vertical (up and down) or horizontal (side to side), but instead, it cuts across the shape.

Usage Instructions:

• You can use "đường chéo" when talking about shapes, graphs, or any context where you might describe a diagonal line.
• It’s commonly used in math problems, geometry lessons, or when discussing the layout of a space.

Example:

• In a square, the line that connects the top left corner to the bottom right corner is called "đường chéo".
• Example sentence: "Trong hình vuông, có hai đường chéo."

Advanced Usage:

• In mathematics, "đường chéo" may also refer to diagonals in polygons with more than four sides or in three-dimensional shapes like cubes.
• In statistics, "đường chéo" can be used to refer to diagonal relationships in data sets or matrices.

Word Variants:

• In different contexts, you might come across variations like:
  • "đường chéo chính": main diagonal (in a square matrix, for example).
  • "đường chéo phụ": secondary diagonal (the diagonal from the top right to the bottom left in a square matrix).

Different Meanings:

• While "đường chéo" primarily refers to a diagonal line in geometry, in casual conversation, it can also metaphorically describe something that is not straightforward or direct.

Synonyms:

• "đường chéo" can be synonymous with:
  • "đường xiên": This term can also mean a diagonal line, especially in a more informal context.

Summary:

In summary, "đường chéo" is an essential term in geometry that describes diagonal lines across shapes.

Academic

1. (toán) Diagonal