How to find the length of the side of a trapezoid

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Math › How to find the length of the side of a trapezoid

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The following quadrilaterals are similar. Solve for .

(Figure not drawn to scale).

When polygons are similar, the sides will have the same ratio to one another. Set up the appropriate proportions.

$\small \frac{2}{8}=\frac{x}{14}$

Cross multiply.

$\small 28=8x$

$\small x=3.5$