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

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Manager
Joined: 07 Jun 2017
Posts: 174
Location: India
Concentration: Technology, General Management
GMAT 1: 660 Q46 V38
GPA: 3.6
WE: Information Technology (Computer Software)
What is the degree measure of an internal angle of a polygon with 12 [#permalink]

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24 Oct 2017, 01:29
00:00

Difficulty:

15% (low)

Question Stats:

74% (00:37) correct 26% (00:48) wrong based on 50 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

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Naveen
email: nkmungila@gmail.com
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Math Expert
Joined: 02 Aug 2009
Posts: 5909
Re: What is the degree measure of an internal angle of a polygon with 12 [#permalink]

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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 = $$10*\frac{180}{12}=150$$
E
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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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