1.   Which pair of ratios is equivalent?
    A. 1:2 and 3:4
    B. 4 to 6 and 8 to 10
    C. 3 to 7 and 7 to 34
    D. 5:6 and 15:18
    Hint

  2.   Identify the figure that is congruent to rectangle ABCD.
   
    A. B.
    C. D.
    Hint

  3.   Which set of figures must be congruent?
    A. two pentagons with all sides 2 in. long
    B. two quadrilaterals with all sides 2 in. long
    C. two triangles with all sides 2 in. long
    D. all answers are correct
    Hint

  4.   A triangle has sides of 6 in., 9 in., and 15 in. It is scaled to make a new triangle with one side that is 3 in. What might the scale factor be?
    A. B.
    C. all answers are correct D.
    Hint

  5.   If the area of a parallelogram is lh, what is the area of the parallelogram after it has been scaled by a factor of 4?
    A. 16lh B. 4lh
    C. lh + 16 D. lh + 4
    Hint

  6.   Find the area of the triangle after it has been scaled by a factor of .
   
    A. 17.32 cm2 B. 10 cm2
    C. 23.09 cm2 D. 13.33 cm2
    Hint

  7.   Find the surface area of the square pyramid after it has been scaled by a factor 3.
   
    A. 252 cm2 B. 1,024 cm2
    C. 84 cm2 D. 756 cm2
    Hint

  8.   These two figures are similar. What is the scale factor from the small figure to the large figure?
   
    A. 7 B. 5
    C. 6 D. 4
    Hint



Glencoe
The McGraw-Hill Companies