Measure any two corresponding edges. The ratio of these edges is the similarity ratio.
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You need to find the perimeter of one by adding together the lengths of all its sides. The perimeter of the similar shape is the answer multiplied by the similarity ratio.
If two objects have the same shape, they are called "similar." When two figures are similar, the ratios of the lengths of their corresponding sides are equal. To determine if the triangles shown are similar, compare their corresponding sides.
ratios r comperisons between 2 numbers
To compare them you find characteristics that they share. To contrast them you find characteristics that they do not share.
Any scientific sales catalogue such as Fischer scientific.