Enter the side length in the first triangle and the side length in the second triangle into the Similarity Ratio Calculator. The calculator will evaluate and display the Similarity Ratio.

## Similarity Ratio Formula

The following formula is used to calculate the Similarity Ratio.

SR = S1 / S2
• Where SR is the Similarity Ratio ( )
• S1 is the side length in the first triangle
• S2 is the side length in the second triangle

To calculate the similarity ratio, divide the side length of the first triangle by the side length of the second triangle.

## How to Calculate Similarity Ratio?

The following example problems outline how to calculate Similarity Ratio.

Example Problem #1:

1. First, determine the side length in the first triangle.
• The side length in the first triangle is given as: 6.
2. Next, determine the side length in the second triangle.
• The side length in the second triangle is provided as: 10.
3. Finally, calculate the Similarity Ratio using the equation above:

SR = S1 / S2

The values given above are inserted into the equation below and the solution is calculated:

SR = 6 / 10 = .60 ( )

Example Problem #2:

For this problem, the variables required are provided below:

side length in the first triangle = 7

side length in the second triangle = 12