Determine the scale factor used in the dilation of the larger rectangle to the similar smaller rectangle. with sides of 20 , 10 , 10 and 5.
A1/2
B. 2
C. 1
The scale factor is determined by dividing the length of a side of the larger rectangle by the corresponding length of the smaller rectangle.
In this case, the corresponding sides are 20 and 10. Dividing 20 by 10 gives a scale factor of 2.
Therefore, the answer is B. 2.