A. top face perpendicular to wall
B. bottom face perpendicular to wall
C. both top and bottom faces perpendicular to wall
D. none of the above
Correct Answer: top face perpendicular to wall ✔
Last Updated: January 12, 2019
A. top face perpendicular to wall
B. bottom face perpendicular to wall
C. both top and bottom faces perpendicular to wall
D. none of the above
Correct Answer: top face perpendicular to wall ✔
Last Updated: January 12, 2019