đa giác

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The Vietnamese word "đa giác" is a noun that translates to "polygon" in English. A polygon is a flat shape that has three or more straight sides and angles. In geometry, polygons can be categorized based on the number of sides they have.

Usage Instructions:

• Basic Usage: You can use "đa giác" when talking about shapes in math or art.
• Example:
  • "Hình vuông là một loại đa giác có bốn cạnh." (A square is a type of polygon that has four sides.)

Advanced Usage:

• In more advanced contexts, "đa giác" can refer to various properties of polygons, such as their angles, area, and perimeter. You might encounter terms like "đa giác đều" (regular polygon) or "đa giác không đều" (irregular polygon), which describe whether the sides and angles are equal.

Word Variants:

• Đa giác đều: Regular polygon (all sides and angles are equal).
• Đa giác không đều: Irregular polygon (sides and angles are not all equal).
• Đa giác lồi: Convex polygon (all interior angles are less than 180 degrees).
• Đa giác lõm: Concave polygon (at least one interior angle is greater than 180 degrees).

Different Meanings:

While "đa giác" primarily refers to geometric shapes, it can also be used metaphorically in discussions about complexity and multi-faceted issues, such as "đa giác tư duy" (multifaceted thinking).

Synonyms:

• In geometry, synonyms might include "hình đa diện" (polyhedron) when discussing three-dimensional shapes, although this term is more specific.

Academic

noun

1. polygon,

adj

1. polygonal