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October 29th, 2017, 10:46 AM   #1
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Calculating Missing Angles

Hi,

So for my geometry%2
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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: 3,016 Thanks: 1600 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. alternate-interior angles c. same-side interior angles 4. interior angles of a triangle ... are you familiar with these angle relationships?
October 29th, 2017, 11:08 AM   #3
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Quote:
 Originally Posted by skeeter 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. alternate-interior angles c. same-side interior angles 4. interior angles of a triangle ... are you familiar with these angle relationships?
Sort of- I'm still trying to grasp these concepts, but I am somewhat familiar with what you're talking about.

 October 29th, 2017, 11:43 AM #4 Senior Member   Joined: Jan 2017 From: US Posts: 120 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
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Quote:
 Originally Posted by Indigo28 So far, I've got: Angle 1: 47 degrees ( because Angle 1 and the angle measuring 47° are vertical, so they are also congruent.)
no ... angle 3 and the 47 deg angle are vertical angles, so angle 3 = 47 deg

Quote:
 Angle 18: 90 degrees (because there is a right angle sign and all right angles measure 90 degrees).
yes

Quote:
 Can anyone answer these questions: Are angles 2 and 3 a linear pair? What are angle 1 and 3 to each other?
no ... linear pairs are 6 & 7 , 8 & 9, 15 % the 128 deg angle, etc ...

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