Understanding Straight Angles | Definition, Examples, and Applications

straight angle

A straight angle is a type of angle that measures exactly 180 degrees

A straight angle is a type of angle that measures exactly 180 degrees. It forms a straight line and is also known as a “line angle.” In a straight angle, the two rays or line segments that form the angle lie on the same straight line, and they extend in opposite directions from the vertex (common endpoint) of the angle.

Visually, a straight angle looks like a horizontal line. It has no curvature or bend and is essentially a full turn or halfway rotation. Since it covers the entire range of angles from 0 degrees to 180 degrees, any angle measuring less than 180 degrees is considered an acute angle, and any angle measuring greater than 180 degrees is categorized as an obtuse angle.

Examples of real-life situations where you may encounter straight angles include forming a straight line with a ruler or measuring the angle between the minute and hour hand of a clock when they are aligned.

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