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What is the degree measure of an internal angle of a polygon with 12

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Joined: 07 Jun 2017
Posts: 175

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Location: India
Concentration: Technology, General Management
GMAT 1: 660 Q46 V38
GPA: 3.6
WE: Information Technology (Computer Software)
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What is the degree measure of an internal angle of a polygon with 12 [#permalink]

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New post 24 Oct 2017, 01:29
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A
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E

Difficulty:

  25% (medium)

Question Stats:

71% (00:33) correct 29% (00:49) wrong based on 38 sessions

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What is the degree measure of an internal angle of a polygon with 12 sides, all equal in length?

A. 30 degrees
B. 60 degrees
C. 120 degrees
D. 135 degrees
E. 150 degrees
[Reveal] Spoiler: OA

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Naveen
email: nkmungila@gmail.com
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Kudos [?]: 86 [0], given: 59

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Joined: 02 Aug 2009
Posts: 5210

Kudos [?]: 5843 [0], given: 117

Re: What is the degree measure of an internal angle of a polygon with 12 [#permalink]

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New post 24 Oct 2017, 08:36
Formula for measure of a regular polygon with sides n is \((n-2)*180\)..
so with 12 sides the SUM of internal angles = \((12-2)*180=10*180\)..

so each internal angle = \(10*\frac{180}{12}=150\)
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Absolute modulus :http://gmatclub.com/forum/absolute-modulus-a-better-understanding-210849.html#p1622372
Combination of similar and dissimilar things : http://gmatclub.com/forum/topic215915.html

Kudos [?]: 5843 [0], given: 117

Re: What is the degree measure of an internal angle of a polygon with 12   [#permalink] 24 Oct 2017, 08:36
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What is the degree measure of an internal angle of a polygon with 12

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