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  1. Learn what a 180-degree angle is, how to draw it with a protractor or a compass, and see real-life examples of this straight angle. Find worksheets, practice questions, and FAQs on 180-degree angles.

  2. One complete turn (360°) is equal to 2 π radians, so 180° is equal to π radians, or equivalently, the degree is a mathematical constant: 1° = π ⁄ 180. One turn (corresponding to a cycle or revolution) is equal to 360°.

  3. 6 days ago · Learn what a 180 degree angle is, how to draw it, and its properties. Find out the types of angles, such as reflex, straight, adjacent, and supplementary angles, and see solved examples.

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  5. A 180 degree angle is the measurement of an angle when the sides are on opposite sides of the vertex, and on form a straight line. A straight angle’s vertex angle is 180° in measure. Here, ∠ AOB = 180°. ∠ AOB can therefore be considered to be a straight angle.

  6. In this Maths article, learn how to draw angles up to 180 degrees using a protractor.