Obtuse angle
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An angle measuring 109 degrees is classified as an obtuse angle. In geometry, an obtuse angle is an angle that measures more than 90 degrees but less than 180 degrees. In this case, the angle of 109 degrees falls within this range, making it an obtuse angle.
straight angle.
An acute angle
A 90-degree angle is commonly called a right angle.
It is a reflex angle that is between 180 and 360 degrees.