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

  2.   Which statement is true?
    A. Any two isosceles triangles are similar. B. Any two right triangles are similar.
    C. Any two triangles are similar. D. Any two equilateral triangles are similar.
    Hint

  3.   Find the value of x in the figure.
   
    A. 3.2 B. 3.6
    C. 5.4 D. 4.8
    Hint

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

  5.   What is a property that similarity of triangles does not have?
    A. symmetric B. reflexive
    C. transitive D. commutative
    Hint