protractor

Meanings

• noun

  An instrument used to measure angles, typically with a flat base and a hingeed arm that can be set to various angles.

  - "The architect used a protractor to measure the angles of the building's roof."
  - "Can you pass me the protractor so I can draw a line at a right angle?"

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Rhymes

Words rhyming with protractor
tractor , actor , quasher

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Variants

List of all variants of protractor that leads to same result
protractor , protractors

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Etymology

origin and the way in which meanings have changed throughout history.

The word 'protractor' comes from the Latin word 'protractus', which means 'extended' or 'drawn out'. This refers to the instrument's ability to measure and extend angles.

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Trivia

Any details, considerations, events or pieces of information regarding the word

1. The protractor was first invented in the 16th century.

2. The protractor is not just used for measuring angles on a flat surface, but can also be used to measure angles in 3D space.

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Related Concepts

informations on related concepts or terms closely associated with the word. Discuss semantic fields or domains that the word belongs to

1. angle: A measure of rotation between two lines or planes. Protractors are used to measure angles.

2. geometry: The branch of mathematics dealing with the properties and relationships of points, lines, shapes, and spaces.

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Culture

Any cultural, historical, or symbolic significance of the word. Explore how the word has been used in literature, art, music, or other forms of expression.

The protractor has been used in education for centuries to teach students about angles and geometry. It has also been used in various fields such as architecture, engineering, and surveying.

How to Memorize "protractor"

1. visualize
   

   - Imagine a flat ruler with a hinge in the middle. Set the zero degree mark on the hinge and rotate one end to measure an angle.

2. associate
   

   - Associate the protractor with angles and geometry. Remember, it's an instrument used to measure angles.

3. mnemonics
   

   - Remember the phrase 'Points On A Line Extend' to help remember that protractors are used to measure angles.

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