bacali wrote:For the cube shown above, what is the degree measure of <PQR?
A. 30
B. 45
C. 60
D. 75
E. 90
OA: C
If we draw a line segment from P to R, we see that the length of PR = length of PQ = length of RQ, since each segment is the diagonal of a square face of the cube.
Thus, we have triangle PQR with all sides of equal lengths, and thus the degree measure of angle PQR is 60 degrees.
Answer: C
