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What is an obtuse angle?

  1. An angle measuring less than 90 degrees

  2. An angle measuring more than 180 degrees

  3. An angle measuring exactly 90 degrees

  4. An angle measuring more than 90 degrees but less than 180 degrees

The correct answer is: An angle measuring more than 90 degrees but less than 180 degrees

An obtuse angle is defined as an angle that measures more than 90 degrees but less than 180 degrees. This means that it is wider than a right angle, which measures exactly 90 degrees, but not as wide as a straight angle, which measures 180 degrees. The measures of angles are crucial in various fields, including geometry, physics, and engineering, where understanding different types of angles helps in solving problems related to shapes, structures, and movements. The correct characterization of obtuse angles allows for accurate geometric constructions and calculations.