In the xy-plane above, is angle QPR a right angle?
This topic has expert replies
-
- Moderator
- Posts: 7187
- Joined: Thu Sep 07, 2017 4:43 pm
- Followed by:23 members
Timer
00:00
Your Answer
A
B
C
D
E
Global Stats
GMAT/MBA Expert
- Jay@ManhattanReview
- GMAT Instructor
- Posts: 3008
- Joined: Mon Aug 22, 2016 6:19 am
- Location: Grand Central / New York
- Thanked: 470 times
- Followed by:34 members
Timer
00:00
Your Answer
A
B
C
D
E
Global Stats
We know that the two axes in xy-plane make 90º. If we are able to prove that PQ is parallel to Y-axis and PR is parallel to X-axis, we can conclude that segments PQ and PR intersect at 90º; thus, /_QPR is 90º.
From Statement 1, we know that PQ is parallel to Y-axis and from Statement 2, we know that PR is parallel to X-axis; thus, /_QPR is 90º. Sufficient.
The correct answer: C
Hope this helps!
-Jay
_________________
Manhattan Review GMAT Prep
Locations: GMAT Manhattan | GRE Prep Courses Chicago | ACT Prep Courses Seattle | Boston IELTS Tutoring | and many more...
Schedule your free consultation with an experienced GMAT Prep Advisor! Click here.