Alternate Exterior Angles are pairs of angles formed when two lines are crossed by a transversal, which lies outside the lines and on the opposite side of the transversal. These angles are equal in measure for a given set of parallel lines, and their exact value can be found by substituting the value of x in the given angles.
To calculate with alternate angles, highlight the angle(s) that you already know, use alternate angles to find a missing angle, and use a basic angle fact. To identify alternate exterior angles, locate the angles that are positioned outside the intersected lines and situated on opposite sides of the transversal.
In summary, alternate exterior angles are formed when a transversal line cuts through parallel lines, and their exact value can be determined by highlighting the existing angles, using alternate angles to find missing angles, and using basic angle facts to identify these angles.
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