Officer Aptitude Rating (OAR) Test 2025 – 400 Free Practice Questions to Pass the Exam

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Which of the following represents a measure less than 90 degrees?

Obtuse angle

Right angle

Acute angle

An acute angle is defined as an angle that measures less than 90 degrees. This means that it is smaller than a right angle but greater than 0 degrees. Acute angles are commonly found in various geometric shapes and play an important role in many mathematical concepts and applications.

In contrast, an obtuse angle measures more than 90 degrees but less than 180 degrees, making it larger than the right angle. A right angle specifically measures exactly 90 degrees, serving as a standard measure for defining perpendicular lines. A straight angle measures exactly 180 degrees, representing a straight line. Therefore, the measure represented by an acute angle is the only choice that specifically indicates an angle of less than 90 degrees.

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Straight angle

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