math 2

how do i find a scale factor for scale drawings and scale models

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  1. When two figures are similar, the reduced ratio of any two corresponding sides is called the scale factor of the similar figure.

    Example
    One side of a square is 6 and the corresponding side of a similar square is 3.

    The ratio is 6 : 3 or 6/3 = 2.

    The scale factor is 2 : 1.

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  2. What is the scale factor for 1 inch = 20 feet?

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