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Lines and Angles Formula: Mathematicians used lines to represent things that are straight and flat. Angles , on the other hand, come from when two straight lines meet in the same flat space. 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. 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.
