1. ALGEBRA I - SECTION 2-8 (Proportions and Similar Figures)@
SECTION 2-8 : PROPORTIONS and SIMILAR FIGURES

2. 1) A sailboat and its model are shown at the right
1) A sailboat and its model are shown at the right. What is the length of the model sailboat?
25 feet 10
ft.
ANSWER : 7.2 feet ??
18 feet

3. Review the “Essential Understanding” on page 130.
SIMILAR FIGURES : have the same shape, though not necessarily the same size.
Review the “Essential Understanding” on page 130.

4. 1a) Identify the corresponding sides.
b) Identify the corresponding angles. E 12
Find the length of side
2a) AC B D F 14
ANSWER : 21 16 18
2b) DE
ANSWER : 10 2/3 A C

5. 4) So, how tall is the Eiffel Tower?
ANSWER : 984 feet

6. 5) Look at Problem 3 on page 132.
SCALE DRAWING : is a drawing similar to an actual object or place. In a scale drawing, the ratio of any length on the drawing to the actual length is always the same. This ratio is called the scale.
5) Look at Problem 3 on page 132.

7. 6) One inch represents 12 miles on a map
6) One inch represents 12 miles on a map. If the distance between two villages is 4 inches on the map, what is the actual distance?
ANSWER : 48 miles
7) A model of a new campus building is 9 inches tall. If one inch represents 8.5 feet, how tall will the new building be?
ANSWER : 76.5 feet