1.   What three things are accepted as true without verification or proof?
    A. theorems, postulates, and undefined terms B. definitions, theorems, and postulates
    C. definitions, postulates, and undefined terms. D. conclusions, hypotheses, and postulates
    Hint

  2.   Which of the following statements is not a postulate?
    A. Points that lie of the same plane are said to be coplanar.
    B. A plane contains at least three points not on the same line.
    C. Through any two points, there is exactly one line.
    D. If two lines intersect, then their intersection is exactly one point.
    Hint

  3.   In the figure, points A, B, and C lie in plane Z. Which of the following postulates can be used to show that A and B are collinear?
   
    A. Through any two points, there is exactly one line.
    B. If two planes intersect, then their intersection is a line.
    C. Through any three points not on the same line, there is exactly one plane.
    D. If two lines intersect, then their intersection is exactly one point.
    Hint

  4.   A group of 7 people get together for a meeting. Before the meeting starts, they each shake hands with every person at the meeting. If a person only shakes hands with another person once, how many handshakes were there before the meeting began?
    A. 42 B. 15
    C. 21 D. 7
    Hint

  5.   If and lie in plane P. Which of the following postulates can be used to show that lies in plane P?
    A. If two planes intersect, then their intersection is a line.
    B. A plane contains at least three points not on the same line.
    C. If two points lie in a plane, then the entire line containing those points lies in that plane.
    D. Through any two points, there is exactly one line.
    Hint



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