1. 2-8 Proportions and Similar Figures

2. Similar Figures: Have the same shape but not necessarily the same size The measures of corresponding angles are equal, and corresponding side lengths are proportional The order of the letters when you name the figures is so important because it tells you which parts of the figure are corresponding parts

4. Problem 1: Finding the Length of a Side

6. Problem 2: Applying Similarity
The sun’s rays strike the building and the girl at the same angle, forming two similar triangles shown. How tall is the building

7. Scale drawing: a drawing that is similar to an actual object or place (floor plans, blueprints, maps) Scale: the ratio of any length on the drawing to the actual length

8. Problem 3: Interpreting Scale Drawings
What is the actual distance from Jacksonville to Orlando?

9. Scale Model: a three-dimensional model that is similar to a three-dimensional object

10. Problem 4: Using Scale Models
A giant model heart is shown below. The heart is the ideal size for a man who is 170 ft. tall. About what size would you expect the heart of the man who is 6 ft. tall to be?