Definition

1. Noun:
   • Prism: A solid geometric figure with two identical, parallel polygonal bases, and whose other faces (lateral faces) are all parallelograms. In mathematics, it specifically refers to this three-dimensional shape.

Usage Examples

• Noun:
  • Hình lăng trụ tam giác có hai đáy là hình tam giác. (A triangular prism has two triangular bases.)
  • Anh ấy đang học cách tính thể tích của một lăng trụ. (He is learning how to calculate the volume of a prism.)
  • Ánh sáng trắng khi đi qua một lăng trụ thủy tinh sẽ bị tán sắc thành cầu vồng. (White light, when passing through a glass prism, is dispersed into a rainbow.)

Advanced Usage

• "Lăng trụ đều": A regular prism. This specifies a prism whose bases are regular polygons (e.g., a regular hexagonal prism).

  • Chiếc cột này có dạng một lăng trụ đều. (This column is in the shape of a regular prism.)

• "Lăng trụ xiên": An oblique prism. This refers to a prism where the lateral edges are not perpendicular to the bases.

  • Khối đá đó là một lăng trụ xiên. (That rock is an oblique prism.)

Variants and Related Words

• Hình lăng trụ (n): Prism shape. This phrase is often used interchangeably with "lăng trụ" to refer to the geometric shape.
• Lăng kính (n): Prism (optical). This term is specifically used for a transparent optical element with flat, polished surfaces used to refract light, often made of glass or plastic.
  • Lăng kính trong kính thiên văn giúp điều chỉnh đường đi của ánh sáng. (The prism in the telescope helps adjust the path of light.)

Synonyms

• Prism: The direct and most common English equivalent.
• Geometric prism: Used for clarity in mathematical or scientific contexts.

Related Phrases / Compound Terms

(As "lăng trụ" is a specific technical noun, it does not have phrasal verbs. Common related compound terms are listed below.) - Lăng trụ tam giác: Triangular prism. - Lăng trụ tứ giác: Quadrangular prism (often a rectangular prism). - Lăng trụ ngũ giác: Pentagonal prism. - Diện tích xung quanh lăng trụ: Lateral surface area of a prism. - Thể tích lăng trụ: Volume of a prism.

Related Idioms

(There are no common idioms specifically using the word "lăng trụ" in Vietnamese, as it is a precise geometric term.)

noun

1. prism