1.   If m15 = 22, what is m14?
   
    A. 68 B. 158
    C. 118 D. 78
    Hint

  2.   If 12 14, and m12 = 75, what is m15?
   
    A. 5 B. 105
    C. 75 D. 15
    Hint

  3.   What is m13 if m11 = 8n - 6 and m12 = 6n - 2?
   
    A. 20 B. 110
    C. 90 D. 70
    Hint

  4.   If a line, j, is in a plane and point B is on j, how many lines in that plane are perpendicular to j at B?
    A. zero B. infinite
    C. two D. one
    Hint

  5.   Which one can not be perpendicular?
    A. lines B. rays
    C. points D. segments
    Hint