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Download Geometry Concepts Name______________________ 7.1 Ratios
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Geometry Concepts 7.1 Ratios and Proportions Name______________________ Ratio- a comparison of two quantities using division. a to b, a:b, or a/b where b 0 Example 1: Thirty girls tried out for 15 spots on a basketball team. What is the ratio of open spots to the number of girls competing? --------------------------------------------------------------------------------------------------------Example 2: The rates of the angles in a triangle are 3:4:5. Find the measures of the angles. --------------------------------------------------------------------------------------------------------Proportion- an equation stating two ratios are equal. Cross Product Property- the product of the extremes equals the product of the means. --------------------------------------------------------------------------------------------------------Example 3: Solve each proportion. -----------------------------------------------------------------------------------------Example 4: Bill conducted a survey of 50 students driving to school and found that 28 owned cars. If 755 students drove to school, predict the total number of students who own cars. Chapter 1 Review Material , 1. ________ 2. _______ 3. _________ 4. ________ 5. ________ 6. ________ 7. ________ 8. ________
