Straight angle: Parts of an Angle The corner point

Parts of an Angle The corner point of an angle is called the vertex And the two straight sides are called arms The angle is the amount of turn between each arm. How to Label Angles There are two main ways to label angles : 1. give the angle a name, usually a lower-case letter like a or b, or sometimes a Greek letter like α (alpha) or θ (theta) 2. or by the three letters on the shape that define the angle , with the middle letter being where the angle actually is (its vertex). Example angle ... Straight (or Flat) angles are formed when the legs are pointing in exactly opposite directions. The two legs then form a single straight line through the vertex of the angle . The measure of a flat angle is thus always 180° Types of angle Altogether, there are six types of angle as listed below. Click on an image for a full description of that type and a corresponding interactive applet. Learn what a straight angle is, how to measure it, and how to identify it in geometry. See examples of straight angles in real life and practice problems with solutions. Straight Angle - Definition, Diagram, Properties, Examples A straight angle is an angle that measures exactly 180°. Learn about the definition, formula, properties, and real-life examples of this special angle through this article.