This math skill teaches how to identify and name different types of angles: a right angle measures exactly 90 degrees, an acute angle is less than 90 degrees, an obtuse angle is more than 90 degrees, and a straight angle measures 180 degrees.
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Naming acute, obtuse, and right angles
Test your understanding of naming acute, obtuse, and right angles by practicing it! Work through the below exercises to use it in practice.
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Let's name these types of angles
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A perfect corner is 90 degrees, which is called a right angle
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An angle smaller than 90 degrees is called an acute angle. Think of small and cute.
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An angle larger than 90 degrees is called an obtuse angle.
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And an angle that is a straight line, or 180 degrees, is called a straight angle