one hundred eighty

Thân thiện

The number one hundred eighty is written on the chalkboard.

Definition

1. Adjective:
   • Being ten more than one hundred seventy: The number 180; denoting a quantity that is exactly ten greater than 170.

Usage

• The word "one hundred eighty" is a cardinal number used as an adjective to describe a count, measurement, or position in a sequence. It is typically written with numerals as "180" in most contexts.
• It is used attributively (before a noun) or predicatively (after a linking verb like "is").

Examples

• Attributive use (before a noun):
  • The total cost was one hundred eighty dollars.
  • The angle measured one hundred eighty degrees.
• Predicative use (after a linking verb):
  • The final score was one hundred eighty.
  • The number of participants is one hundred eighty.

Advanced Usage

• In Mathematics and Geometry: Commonly used to describe a straight angle, which is 180 degrees.
  • A semicircle subtends an angle of one hundred eighty degrees at the center.
• In Formal or Legal Writing: Often spelled out for clarity in contracts or documents.
  • The term shall not exceed one hundred eighty (180) days.

Variants and Related Words

• 180: The standard numeral form.
• A hundred and eighty: A common, less formal spoken variant, especially in British English.
• CLXXX: The Roman numeral representation.
• One-eighty (informal/slang): Can refer to a complete reversal in direction or opinion (derived from the 180-degree turn).

Synonyms

• A hundred and eighty
• Eighteen tens (rare, mathematical)

Notes on Different Meanings

• As a cardinal number, "one hundred eighty" has only one primary numerical meaning. Its informal variant "one-eighty" has developed an idiomatic meaning unrelated to the exact quantity.

Related Idioms and Phrases

• Do a one-eighty / Pull a one-eighty: To make a complete reversal in direction, opinion, or policy.
  • After hearing the evidence, the committee did a complete one-eighty on the issue.
  • Note: This idiom uses the informal, hyphenated form "one-eighty," which is derived from the number.

Học thuật

Adjective

1. being ten more than one hundred seventy

Từ đồng nghĩa

• 180
• clxxx