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# In the xy-plane, a quadrilateral has vertices at (–1, 4), (7, 4), (7,

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Math Expert
Joined: 02 Sep 2009
Posts: 50623
In the xy-plane, a quadrilateral has vertices at (–1, 4), (7, 4), (7,  [#permalink]

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15 Jul 2018, 07:40
00:00

Difficulty:

15% (low)

Question Stats:

76% (01:22) correct 24% (01:29) wrong based on 46 sessions

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In the xy-plane, a quadrilateral has vertices at (–1, 4), (7, 4), (7, –5), and (–1, –5). What is the perimeter of the quadrilateral?

A. 17
B. 18
C. 19
D. 32
E. 34

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Joined: 22 Feb 2018
Posts: 395
Re: In the xy-plane, a quadrilateral has vertices at (–1, 4), (7, 4), (7,  [#permalink]

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16 Jul 2018, 01:07
OA: E

This quadrilateral will be a rectangle.
Attachment:

Capture1.PNG [ 19.42 KiB | Viewed 445 times ]

$$AB=CD=9$$
$$AD=BC=8$$
Perimeter of Quadrilateral ABCD $$=AB+CD+AD+BC = 9+9+8+8 =18+16=34$$
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Re: In the xy-plane, a quadrilateral has vertices at (–1, 4), (7, 4), (7, &nbs [#permalink] 16 Jul 2018, 01:07
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