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Updated on: 10 Apr 2022, 05:11
Originally posted by nocilis on 02 Feb 2005, 22:35.
Last edited by Sajjad1994 on 10 Apr 2022, 05:11, edited 2 times in total.
Last edited by Sajjad1994 on 10 Apr 2022, 05:11, edited 2 times in total.
Edited the question and added the OA.
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C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
45%
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Question Stats:
54% (00:56) correct
46%
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For the cube shown above, what is the degree measure of PQR?
A. 30
B. 45
C. 60
D. 75
E. 90
Attachment:
cube.gif [ 2.13 KiB | Viewed 109665 times ]
30 Jun 2012, 07:43
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For the cube shown above, what is the degree measure of PQR?
A. 30
B. 45
C. 60
D. 75
E. 90
Note that triangle PQR is equilateral: it's made by the diagonals of the adjacent faces of the given cube (and as faces of a cube are squares its diagonals are equal). Thus angle BEG=60 degrees.
Answer: C.
cube.gif [ 2.28 KiB | Viewed 112103 times ]
A. 30
B. 45
C. 60
D. 75
E. 90
Note that triangle PQR is equilateral: it's made by the diagonals of the adjacent faces of the given cube (and as faces of a cube are squares its diagonals are equal). Thus angle BEG=60 degrees.
Answer: C.
Attachment:
cube.gif [ 2.28 KiB | Viewed 112103 times ]
23 May 2014, 12:22
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ankushbassi
Hi Bunuel, since the face of a cube forms the square and the diagonal of the square bisects the angles.The 2 diagonals shown in the pictures and each makes an angle of 45.Thus,why not the answer is 45+45=90?Can you please help me to understand this.
Hi Ankush,The angle in question is as shown.Please refer the diagram below:
Attachment:
g2.png [ 17.85 KiB | Viewed 101633 times ]
What you are referring are the two angles in two different planes.
which are angle POA and angle AOR each 45 degrees
They are on adjacent faces of the cube,which you cannot combine.
Attachment:
G5.png [ 11.18 KiB | Viewed 101235 times ]
Hope this helps.
Press kudos if it was of help.
Kindly check the following post with the poll and revert with your replies
10-straight-lines-no-two-of-which-are-parallel-and-no-three-171525.html
