1.   and are similar. Find x if z = 3, a = 6,
and c = 4.5.
   
    A. 2.25 B. 7.5
    C. 9 D. 4
    Hint

  2.   Which triangle is not similar to the other three?
   
    A. JKL B. ABC
    C. GHI D. DEF
    Hint

  3.   What is the measure of ?
   
    A. 9 B. 5.14
    C. 8.75 D. 7.2
    Hint

  4.   Which one of the triangles shown is not similar to the others?
   
    A. X B. W
    C. Y D. Z
    Hint

  5.   Which of the following is not necessarily true concerning similar triangles?
    A. The measures of their corresponding sides are equal.
    B. Each triangle has angles whose sum is 180°.
    C. The measures of their corresponding angles are equal.
    D. The measures of their corresponding sides are proportional.
    Hint



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