C. 4 : 1
When a figure is dilated by a factor of 2, the area is multiplied by the square of the factor of dilation. Since the factor of dilation is 2, the ratio of the area of A'B'C'D' to the area of ABCD is 4 : 1.
Select the correct answer.
In the figure, triangle ABC is congruent to triangle ADC. If the square ABCD is dilated by a factor of 2 to form A'B'C'D', what is the ratio of the area of A'B'C'D' to the area of ABCD?
A. 2 : 1
B. 3 : 1
C. 4 : 1
D. 5 : 1
1 answer