Answer
The ratio of the perimeters 1:2
The ratio of the areas 1:4
Work Step by Step
Find the corresponding side ratio.
$\frac{2}{4}$=$\frac{1}{2}$
The ratio of the perimeters is equal to the ratio of the corresponding sides.
$\frac{1}{2}$=$\frac{1}{2}$. This can be written as 1:2 also.
The ratio of the areas is equal to the square of the ratio of the corresponding sides.
$\frac{1^{2}}{2^{2}}$=$\frac{1}{4}$. This can also be written as 1:4
