The pair of figures is similar. Find the ratio (left to right) of the perimeter.
Options
A
4 : 9
B
9 : 4
C
5 : 9
D
9 : 5
Answer & Analysis
Answer
B
Analysis
Question Analysis
This question focuses on the Perimeters of Similar Shapes. The core is to use the property that for similar triangles, the ratio of their perimeters is the same as the ratio of their corresponding side lengths to find the required ratio.
Key Concept Explanation
For similar triangles, if the ratio of corresponding side lengths is , then the ratio of their perimeters is also . This is because perimeter is a linear measurement, and similar triangles maintain consistent proportionality for linear aspects.
Step - by - Step Solution
1. Identify a pair of corresponding sides. Let's take the side of length in the left triangle and the side of length in the right triangle.
2. Calculate the ratio: .
We can verify with another pair. Taking the side of length in the left triangle, if the corresponding side in the right triangle is
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