1.   What is used to show that an assumption is false?
    A. conjecture B. counterexample
    C. inductive reasoning D. pattern
    Hint

  2.   Based upon the table below, Mari concluded that when one of two addends is negative, the sum is always negative. Find a counterexample for her conjecture.
   
    A. -5 + (-5) B. -13 + 5
    C. 18 + (-10) D. -8 + 7
    Hint

  3.   A line can be named using ___ points.
    A. 4 B. 3
    C. 2 D. 1
    Hint

  4.   How many planes contain all three points M, N, and O?
   
    A. 1 B. 2
    C. 0 D. 3
    Hint

  5.   A ___ can be used to prove an if-then statement false.
    A. counterexample B. converse
    C. hypothesis D. conclusion
    Hint

  6.   Which of these items can be used as a straightedge?
    A. the edge of an index card B. all of these
    C. cover of a book D. computer diskette
    Hint

  7.   Name the intersection of plane SZT and plane RTX.
   
    A. B.
    C. D.
    Hint

  8.   How many points are needed to define a plane?
    A. 3 B. 2
    C. 4 D. 5
    Hint

  9.   Write a converse for the statement, ''If a figure has five angles, then it is a pentagon.''
    A. ''If a figure is a pentagon, then it has five angles''
    B. ''A pentagon is a figure with five angles''
    C. ''Pentagons have five angles and five sides''
    D. ''A five angled figure is a pentagon''
    Hint

  10.   Which line is straight?
   
    A. A B. B
    C. D D. C
    Hint

  11.   Find the area of the parallelogram
   
    A. 30.0m2 B. 28.8m2
    C. 32.4m2 D. 28.0m2
    Hint

  12.   A square has an area of 36m2 and a perimeter of 24m. What is the length of a side of the square?
    A. 6m B. 4m
    C. 9m D. 5m
    Hint



Glencoe
The McGraw-Hill Companies