Q:

# How is the scale factor obtained?

A:

The scale factor can be obtained by dividing the length of a side in the second shape by the length of the corresponding side. The scale factor is a fraction or decimal number that can be used to scale up or down a shape.

## Keep Learning

A scaled up or scaled down shape is identical to the original shape in terms of number of sides and size of internal angles. The original and scaled shape can be matched up based on the equivalent angles. The scale factor is calculated dividing a side on the resulting shape by the matching side on the original. The lengths of other sides on the scaled shape can be calculated by multiplying other sides of the original by the scale factor.

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## Related Questions

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Daily life makes use of the Pythagorean theorem in various ways, such as determining the viewing size of a television, which is sometimes a factor used in purchasing decisions. Given the length and height of the screen, the diagonal viewing area can be determined with the theorem.

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A rectangle is a simple shape that is characterized by having four sides at 90-degree angles to each other, and having both sets of opposing sides be the same length. Note that if all sides are equal to each other, the shape is not a rectangle, but a square.

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A nonrigid transformation describes any transformation of a geometrical object that changes the size, but not the shape. Stretching or dilating are examples of non-rigid types of transformation.