Calculating Missing Angles 1 Attachment(s) Hi, So for my geometry%2 
http://mymathforum.com/attachments/g...oncept_act.jpg not saying this is an exhaustive list, but from an initial glance it looks as if there are ... 1. pairs of vertical angles 2. linear pairs of angles 3. angles formed by parallel lines cut by a transversal ... a. corresponding angles b. alternateinterior angles c. sameside interior angles 4. interior angles of a triangle ... are you familiar with these angle relationships? 
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So far, I've got: Angle 1: 47 degrees ( because Angle 1 and the angle measuring 47° are vertical, so they are also congruent.) Angle 18: 90 degrees (because there is a right angle sign and all right angles measure 90 degrees). Can anyone answer these questions: Are angles 2 and 3 a linear pair? What are angle 1 and 3 to each other? 
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