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Exercise: Angles between two planes. To show the dynamic figures properly, the evaluation version of Cabri 3D (V2.0 or above) must be installed. Enter. There are 12 multiple choice questions. Click the letter to answer. Enter.

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  1. Exercise: Angles between two planes To show the dynamic figures properly, the evaluation version of Cabri 3D (V2.0 or above) must be installed. Enter

  2. There are 12 multiple choice questions. Click the letter to answer. Enter

  3. 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

  4. 1.Incorrect! Hint: Click and right-button drag the figure to change the view angle. Which angle is the angle between planes ABGH and ABCD? Back

  5. 1.Correct! • CBG is the angle between planes ABGH and ABCD. (Click and right-button drag the figure to change the view angle. ) Next

  6. 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

  7. 2.Incorrect! Hint: Click and right-button drag the figure to change the view angle. Which angle is the angle between planes ABGH and CDHG? Back

  8. 2.Correct! • AHD is the angle between planes ABGH and CDHG. (Click and right-button drag the figure to change the view angle. ) Next

  9. 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

  10. 3.Incorrect! Hint: Click and right-button drag the figure to change the view angle. Which angle is the angle between planes VBC and ABCD? Back

  11. 3.Correct! • OMV is the angle between planes VBC and ABCD. (Click and right-button drag the figure to change the view angle. ) Next

  12. 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

  13. 4.Incorrect! Hint: Click and right-button drag the figure to change the view angle. Which angle is the angle between planes VAB and ABCD? Back

  14. 4.Correct! • ONV is the angle between planes VAB and ABCD. (Click and right-button drag the figure to change the view angle. ) Next

  15. 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

  16. 5.Incorrect! Hint: Click and right-button drag the figure to change the view angle. Which angle is the angle between planes ABC and OAB? Back

  17. 5.Correct! • OPC is the angle between planes ABC and OAB. (Click and right-button drag the figure to change the view angle. ) Next

  18. 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

  19. 6.Incorrect! Hint: Click and right-button drag the figure to change the view angle. Which angle is the angle between planes ABC and OAC? Back

  20. 6.Correct! • ONV is the angle between planes ABC and OAC. (Click and right-button drag the figure to change the view angle. ) Next

  21. 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

  22. 7.Incorrect! Hint: Click and right-button drag the figure to change the view angle. Which angle is the angle between planes ABGH and ABCD? Back

  23. 7.Correct! • AOB is the angle between planes OAC and OBC. (Click and right-button drag the figure to change the view angle. ) Next

  24. 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

  25. 8.Incorrect! Hint: Click and right-button drag the figure to change the view angle. Which angle is the angle between planes ABFE and ABCD? Back

  26. 8.Correct! • DAE is the angle between planes ABFE and ABCD. (Click and right-button drag the figure to change the view angle. ) Next

  27. 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

  28. 9.Incorrect! Hint: Click and right-button drag the figure to change the view angle. Which angle is the angle between planes ABFE and CDEF? Back

  29. 9.Correct! DEA is the angle between planes ABFE and CDEF. (Click and right-button drag the figure to change the view angle. ) Next

  30. 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

  31. 10.Incorrect! Hint: Click and right-button drag the figure to change the view angle. Which angle is the angle between planes ACH and ABCD? Back

  32. 10.Correct! • DOH is the angle between planes ACH and ABCD. (Click and right-button drag the figure to change the view angle. ) Next

  33. 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

  34. 11.Incorrect! Hint: Click and right-button drag the figure to change the view angle. Which angle is the angle between planes VAB and ABCD? Back

  35. 11.Correct! • VAD is the angle between planes VAB and ABCD. (Click and right-button drag the figure to change the view angle. ) Next

  36. 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

  37. 12.Incorrect! Hint: Click and right-button drag the figure to change the view angle. Which angle is the angle between planes VBC and ABCD? Back

  38. 12.Correct! • VCD is the angle between planes VBC and ABCD. (Click and right-button drag the figure to change the view angle. ) End Restart

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