Last visit was: 22 Nov 2024, 09:19 It is currently 22 Nov 2024, 09:19

Close

GRE Prep Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, weโ€™ll send you an estimated GRE score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Close

Request Expert Reply

Confirm Cancel
Verbal Expert
Joined: 18 Apr 2015
Posts: 30003
Own Kudos [?]: 36350 [1]
Given Kudos: 25927
Send PM
Manager
Manager
Joined: 05 Sep 2023
Posts: 63
Own Kudos [?]: 66 [1]
Given Kudos: 11
Send PM
Manager
Manager
Joined: 23 Sep 2023
Posts: 65
Own Kudos [?]: 13 [0]
Given Kudos: 59
Send PM
Verbal Expert
Joined: 18 Apr 2015
Posts: 30003
Own Kudos [?]: 36350 [0]
Given Kudos: 25927
Send PM
Re: Rectangle ABCD lies in the xy -plane. The co-ordinates of point A, B a [#permalink]
Expert Reply
OE

We are given that ABCD is a rectangle. We need to find the coordinates of point D.

Now, we know that the diagonals of a rectangle are bisectors of each other. So, the
point of intersection will be their mid-point also.
Mid-point of AC = Mid-point of BD
Also, midpoint of two coordinates (๐‘ฅ1, ๐‘ฆ1) and (๐‘ฅ2, ๐‘ฆ2) is given by (๐‘ฅ1+๐‘ฅ2/2,๐‘ฆ1+ ๐‘ฆ2/2)

So, we get (3 + 11/2,5 + 7/2) = (8 + ๐‘ฅ/2,2 + ๐‘ฆ/2)

โ‡จ3+11/2=8+๐‘ฅ/2 and 5+7/2=2+๐‘ฆ/2
โ‡จ 14 = 8 + ๐‘ฅ and 12 = 2 + ๐‘ฆ
โ‡จ ๐‘ฅ = 6 and ๐‘ฆ = 10
Hence, the coordinates of D are (6, 10).
Ans. (C)
Prep Club for GRE Bot
Re: Rectangle ABCD lies in the xy -plane. The co-ordinates of point A, B a [#permalink]
Moderators:
GRE Instructor
84 posts
GRE Forum Moderator
37 posts
Moderator
1111 posts
GRE Instructor
234 posts

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne