# Ratios, Proportions & Similarity · PDF file Ratios, Proportions & Similarity. Vocabulary: 1. Ratio: a comparison of two values by division. 2. Proportion: a statement that two ratios

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Vocabulary: 1. Ratio: a comparison of two values by division.
2. Proportion: a statement that two ratios are equal.
3. Cross Products: multiplying two proportions.
4. Similar Figures: two figures that have the same shape but not necessarily the same size. Angles are congruent; sides are proportional.
5. Similarity statement: a statement indicating that two polygons are similar by listing vertices in order of correspondence.
New Concepts: What is Similarity??
New Concepts: Similar Figures
New Concepts: Similar Figures
Example 1: Writing Ratios and Proportions
Example 1: Writing Ratios and Proportions
You Try! Write a ratio in three ways: 1. Write three ratios comparing the longest sides.
2. Write three ratios comparing the shortest sides.
New Concepts: Proportions
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