1. “Missed it by that much!”

2. Unit 7: Similarity (7.1) Ratios and Proportions Obj: Write and solve proportions

3. Ratios Ratio: A comparison of two quantities by division. 1) The ratio of a to b 2) a : b Ratios can be written in three ways…

4. 5 in. Ratios 6 in. 1 ¾ ft. 2 ft. Find the ratio of the width of the photo to the poster.

5. Proportions Proportion: A statement that two ratios are equal. Determine if each of the following pairs of ratios are equal. = ≠=

6. Proportions Properties of Proportions: is equivalent to… Cross-Product Property: The product of the extremes is equal to the product of the means.

7. If, complete each statement. Applying Properties

8. Solving Proportions Solve the following proportions.

9. Ratios Scale: The ratio of any length in a scale drawing to the corresponding actual length. Ex. 1cm to 1ft or 1in = 10ft or 1mm : 100mi An inch ruler shows that l = 7/8 in. Find the actual length of the bedroom.

10. “I’m in a glass case of emotion.”

11. 7.1 Ratios and Proportions HW (7.1): Pgs. 368-370; 1-29 odd, 43, 44