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In the figure below, if line L1 and L2 are not parallel, which of the

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In the figure below, if line L1 and L2 are not parallel, which of the [#permalink] New post   03 Oct 2022, 02:51
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In the figure below, if line L1 and L2 are not parallel, which of the following could be true?

Attachment:
GRe angles (4).jpg
GRe angles (4).jpg [ 18.51 KiB | Viewed 1264 times ]



(A) h = f
(B) b + c = 180
(C) d + a = 180
(D) e = c
(E) d = e



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kk117
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Re: In the figure below, if line L1 and L2 are not parallel, which of the [#permalink] New post   03 Oct 2022, 09:52
Could someone please explain this question?
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Re: In the figure below, if line L1 and L2 are not parallel, which of the [#permalink] New post   03 Oct 2022, 10:14
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Attachment:
screenshot.928.jpg
screenshot.928.jpg [ 34.85 KiB | Viewed 1186 times ]



regardless the two lines are parallel or not only D could be true

The others options are always false

See the picture above

Ask if something is till unclear
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Re: In the figure below, if line L1 and L2 are not parallel, which of the [#permalink] New post   12 Oct 2022, 09:13
Carcass wrote:
Attachment:
screenshot.928.jpg



regardless the two lines are parallel or not only D could be true

The others options are always false

See the picture above

Ask if something is till unclear

Can you please explain it more like is it some property or rule ?
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In the figure below, if line L1 and L2 are not parallel, which of the [#permalink] New post   12 Oct 2022, 09:58
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Attachment:
screenshot.963.jpg
screenshot.963.jpg [ 42.13 KiB | Viewed 1033 times ]


Attachment:
screenshot.964.jpg
screenshot.964.jpg [ 98.01 KiB | Viewed 1040 times ]


As you can see from the rules above only D could be true or not. it depends on If the line are parallel or NOT

The others option are true

Ask if it is still not clear

Source: mathisfun
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Re: In the figure below, if line L1 and L2 are not parallel, which of the [#permalink] New post   12 Oct 2022, 10:56
prakhark wrote:
Carcass wrote:
Attachment:
screenshot.928.jpg



regardless the two lines are parallel or not only D could be true

The others options are always false

See the picture above

Ask if something is till unclear
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In the figure below, if line L1 and L2 are not parallel, which of the [#permalink] New post   12 Oct 2022, 11:24
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I edited my message. Mismatch: the other options are true not false.

I.E: in a could be true questions, depending of what the stem is asking you, we have to find the answer that could be true but also false.

The answer has 1/2 of the probability.

The others are always true or always false. That is the trick
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