A straight angle measures exactly 180°, representing half a complete turn. It forms a straight line with arms extending opposite each other. Examples include a folded book’s spine or the horizon’s line.
Class 6 Mathematics Ganita Prakash Lines and Angles
Class 6 Mathematics Chapter 2 Lines and Angles question answer
A straight angle is formed when two rays extend in opposite directions from a common vertex, creating a straight line. It measures 180°, which is half a full turn (360°). For instance, the hands of a clock at 6 o’clock or the horizon viewed in a straight line form straight angles. These angles are foundational in geometry, often used to define linear relationships, parallel lines, and bisected angles.
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