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What is the value of a + b + c + d?

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What is the value of a + b + c + d? [#permalink] New post 06 Oct 2018, 15:05
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Question Stats:

82% (00:37) correct 17% (01:06) wrong based on 23 sessions
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What is the value of a + b + c + d?

[Reveal] Spoiler: OA
290

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Re: What is the value of a + b + c + d? [#permalink] New post 07 Oct 2018, 09:10
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sandy wrote:
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What is the value of a + b + c + d?

[Reveal] Spoiler: OA
290


Since vertically opposite angles are equal, we know that the unlabeled angle must equal 35° which can add to our diagram...
Image

All 6 angles must add to 360 degrees.
So, we can write: a + b + c + d + 35 + 35 = 360
Simplify: a + b + c + d + 70 = 360
Subtract 70 from both sides to get: a + b + c + d = 290

Answer: 290

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Re: What is the value of a + b + c + d?   [#permalink] 07 Oct 2018, 09:10
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What is the value of a + b + c + d?

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