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# In the figure above, what is a in terms of b and c?

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Math Expert
Joined: 02 Sep 2009
Posts: 53020
In the figure above, what is a in terms of b and c?  [#permalink]

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05 Feb 2019, 02:25
00:00

Difficulty:

25% (medium)

Question Stats:

75% (00:28) correct 25% (00:29) wrong based on 8 sessions

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In the figure above, what is a in terms of b and c?

A. 180 − (b + c)
B. 180 + (b + c)
C. (b + c)
D. (b + c) − 180
E. (b + c) + 180

Attachment:

2019-02-05_1424.png [ 14.75 KiB | Viewed 132 times ]

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Joined: 28 Sep 2018
Posts: 23
Re: In the figure above, what is a in terms of b and c?  [#permalink]

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05 Feb 2019, 02:29
The exterior angle is the sum of the 2 remote interior angles.

(C)

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Re: In the figure above, what is a in terms of b and c?  [#permalink]

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05 Feb 2019, 02:35
Consider A as the third angle of the triangle, then A+b+c=180
180-a+b+c=180
b+c=a

Option C

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Re: In the figure above, what is a in terms of b and c?   [#permalink] 05 Feb 2019, 02:35
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