# 9.18: Unknown Measures of Similar Figures

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**Practice**Unknown Measures of Similar Figures

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Congruent

Congruent

Congruent figures are identical in size, shape and measure.Corresponding

Corresponding

The corresponding sides between two triangles are sides in the same relative position.Proportion

Proportion

A proportion is an equation that shows two equivalent ratios.Similar

Similar

Two figures are similar if they have the same shape, but not necessarily the same size.### Image Attributions

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Find unknown side lengths in similar figures.

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Date Created:

Oct 29, 2012
Last Modified:

Jul 08, 2015
Vocabulary

Congruent

Congruent

Congruent figures are identical in size, shape and measure.Corresponding

Corresponding

The corresponding sides between two triangles are sides in the same relative position.Proportion

Proportion

A proportion is an equation that shows two equivalent ratios.Similar

Similar

Two figures are similar if they have the same shape, but not necessarily the same size.
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