October 29th, 2017, 10:46 AM  #1 
Senior Member Joined: Jan 2017 From: US Posts: 112 Thanks: 6  Calculating Missing Angles
Hi, So for my geometry%2 Last edited by Indigo28; October 29th, 2017 at 11:07 AM. 
October 29th, 2017, 11:06 AM  #2 
Math Team Joined: Jul 2011 From: Texas Posts: 2,761 Thanks: 1416  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? 
October 29th, 2017, 11:08 AM  #3  
Senior Member Joined: Jan 2017 From: US Posts: 112 Thanks: 6  Quote:
 
October 29th, 2017, 11:43 AM  #4 
Senior Member Joined: Jan 2017 From: US Posts: 112 Thanks: 6 
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? 
October 29th, 2017, 12:13 PM  #5  
Math Team Joined: Jul 2011 From: Texas Posts: 2,761 Thanks: 1416  Quote:
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