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# The figure above shows a cross section of a building. If the rafter is

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Math Expert
Joined: 02 Sep 2009
Posts: 58320
The figure above shows a cross section of a building. If the rafter is  [#permalink]

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01 Feb 2018, 23:46
00:00

Difficulty:

35% (medium)

Question Stats:

80% (01:21) correct 20% (01:46) wrong based on 40 sessions

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The figure above shows a cross section of a building. If the rafter is parallel to the joist, what is the measure of angle x?

(A) 45

(B) 60

(C) 80

(D) 90

(E) 105

Attachment:

2018-02-02_1045.png [ 17.16 KiB | Viewed 625 times ]

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Re: The figure above shows a cross section of a building. If the rafter is  [#permalink]

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02 Feb 2018, 00:05
1
Bunuel wrote:

The figure above shows a cross section of a building. If the rafter is parallel to the joist, what is the measure of angle x?

(A) 45

(B) 60

(C) 80

(D) 90

(E) 105

Attachment:
The attachment 2018-02-02_1045.png is no longer available

Fund the solution in attachment

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Re: The figure above shows a cross section of a building. If the rafter is  [#permalink]

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02 Feb 2018, 00:15
C. 80

With reference to the figure attached,

The truss leg on the right makes an angle of 80° with the joist. As the rafter and joist are parallel x should be equal to 80°. Hence C
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Re: The figure above shows a cross section of a building. If the rafter is  [#permalink]

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02 Feb 2018, 01:20
The measure of angle x will be 105-25 = 80 degrees

(Properties of angles made by parallel lines and transversal).

Re: The figure above shows a cross section of a building. If the rafter is   [#permalink] 02 Feb 2018, 01:20
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