1. 1. (Hold down the right mouse button and drag to change the view angle
ABCDEFGH is a cube. Which of the following angle is the angle between planes ABGH and ABCD?
A  CAG
B  CBG
C  CGB
D  DBH

2. 2. (Hold down the right mouse button and drag to change the view angle
ABCDEFGH is a cuboid. Which of the following angles is the angle between planes ABGH and CDHG?
A  DHB
B  AGC
C  AHD
D  HAD

3. 3. (Hold down the right mouse button and drag to change the view angle
ABCD is a square, M is the mid-point of BC, and VO is the altitude of the pyramid. Which angle is the angle between planes VBC and ABCD?
A  OBV
B  OCV
C  OMV
D  OVM

4. 4. (Hold down the right mouse button and drag to change the view angle
ABCD is a square, N is the mid-point of AB, and VO is the altitude of the pyramid. Which of the following angles is the angle between planes VAB and ABCD?
A  ONV
B  OAV
C  OBV
D  ABV

5. 5. (Hold down the right mouse button and drag to change the view angle
In the figure CO is the altitude of the pyramid,  AOB = 90, M is the mid-point of AB, OP AB. Which of the following angles is the angle between planes ABC and OAB?
A  OMC
B  OPC
C  OAC
D  OBC

6. 6. (Hold down the right mouse button and drag to change the view angle
In the figure CO is the altitude of the pyramid,  AOB = 90, N is the mid-point of AC, OQ AC. Which of the following angles is the angle between planes ABC and OAC?
A  OAB
B  OCB
C  ONB
D  OQB

7. 7. (Hold down the right mouse button and drag to change the view angle
In the figure, CO is the altitude of the pyramid,  AOB = 90. Which of the following angles is the angle between planes OAC and OBC?
A  AOB
B  ACB
C  OCA
D  OCB

8. 8. (Hold down the right mouse button and drag to change the view angle
In the prism of the figure, ABCD and CDEF are rectangles, BCF = 90. Which of the following angles is the angle between planes ABFE and ABCD?
A  DAE
B  AED
C  EAB
D  FAC

9. 9. (Hold down the right mouse button and drag to change the view angle
In the prism of the figure, ABCD and CDEF are rectangles, BCF = 90. Which of the following angles is the angle between ABFE and CDEF?
A  AEF
B  DAE
C  DEA
D  ADE

10. 10. (Hold down the right mouse button and drag to change the view angle.)
ABCDEFGH is a cube, O is the centre of ABCD. Which of the following angles is the angle between planes ACH and ABCD?
A  HAC
B  DAH
C  DCH
D  DOH

11. 11. (Hold down the right mouse button and drag to change the view angle.)
In the figure, ABCD is a rectangle, M is the mid-point of AB, and VD is the altitude of the pyramid. Which of the following angles is the angle between planes VAB and ABCD?
A  VAD
B  VMD
C  VBA
D  VBD

12. 12. (Hold down the right mouse button and drag to change the view angle.)
In the figure, ABCD is a rectangle, N is the mid-point of BC, and VD is the altitude of the pyramid. Which of the following angles is the angle between planes VBC and ABCD?
A  VBD
B  VND
C  VCD
D  VBC

13. 13. (Hold down the right mouse button and drag to change the view angle.)
In the figure, ABCD is a rectangle, VD is the altitude of the pyramid. Which of the following angles is the angle between planes VAB and VCD?
A  BVC
B  BVD
C  AVC
D  AVD

14. 14. (Hold down the right mouse button and drag to change the view angle.)
The figure shows a right square prism, O is the centre of EFGH. Which of the following angles is the angle between planes BFH and ABCD?
A  ABF
B  CBH
C  OBA
D  OBD