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What is a Gradian?

Angle Unit

Definition

A gradian (also called gon or grade) is a unit of angle where a right angle equals 100 gradians and a full rotation is 400 gradians.

History

The gradian was introduced in France as part of the metric system during the French Revolution to decimalize angle measurement.

Common Uses

  • Surveying in some countries
  • Some scientific calculators
  • European land surveying
  • Mining and civil engineering

Fun Facts

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100 gradians equals a right angle

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France and some European countries use gradians

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Most scientific calculators have a 'grad' mode

All Gradian Conversions