1. Ratio and Equivalent Ratios
24.1 Ratios and Rates p. 532
Introduction:
Quick Review
Objective: To write ratios and rates and to find unit rates
Vocab:
ratio = The comparison of two numbers by division
equivalent ratios = Ratios that name the same comparisons
rate = A ratio that compares two quantities having different units of measure
unit rate = A rate that has 1 unit as its second term
Glossary
Ratio and Equivalent Ratios
Unit Rate
Glossary

2. Example 3: Finding the ratio of miles to hours miles/hours = 200/4
Guided Instruction:
Example 3: Finding the ratio of miles to hours
miles/hours = 200/4
It will take the Howards ___ hr. to travel ______ mi.
Parallelogram Tutorial

3. 24.3 Solve Proportions p. 536 Introduction: Quick Review
Objective: to learn how to write and solve proportions
Glossary
Proportions

4. Example 1: Solving a proportion 5 = 50 5 x a = 2 x 50
Guided Instruction:
Example 1: Solving a proportion
5 = 50
5 x a = 2 x 50
Parallelogram Tutorial

5. 24.4 Ratios and Similar Figures p. 538
Introduction:
Quick Review
Objective: Learn how to use ratios to identify similar figures
Vocab:
corresponding sides= Sides that are in the same position in different plane figures
corresponding angles= Angles that are in the same position in different plane figures
Glossary
Corresponding Sides and Angles
Glossary

6. The ratio of the lengths of the corresponding sides is ________.
Guided Instruction:
Example 1: Finding the measures of angles and the ratio of lengths of corresponding sides
MN NP PM
The ratio of the lengths of the corresponding sides is ________.
Parallelogram Tutorial

7. 24.5 Proportions and Similar Figures p. 542
Introduction:
Quick Review
Objective: Learn how to use proportions and similar figures
Vocab:
indirect measurement= The technique of using similar figures and proportions to find a measure
Glossary
Indirect Measurement
Glossary

8. Guided Instruction:
Example 1: Finding an unknown length using similar figures and proportion
6 = 4
x = x
6 in
4 in
12 in
Parallelogram Tutorial

9. 24.6 Scale Drawings p. 542 Introduction: Quick Review
Objective: Learn how to use scale to find the dimensions for a drawing or the actual dimensions of an object
Vocab:
scale drawing= A drawing that shows a real object smaller than (a reduction) or larger than (an enlargement) the real object
scale= The ratio between two sets of measurements
Glossary
Scale Drawing
Glossary

10. RECAP: Match the vocab word with its definition
The technique of using similar figures and proportions to find a measure
Sides that are in the same position in different plane figures
Angles that are in the same position in different plane figures
A rate that has 1 unit as its second term
The comparison of two numbers by division
Ratios that name the same comparisons
A ratio that compares two quantities having different units of measure
ratio
equivalent ratios
rate
unit rate
corresponding sides
corresponding angles
indirect measurement
scale drawing
scale