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In this investigation, you used what you know about similar triangles to find heights of buildings and to estimate other inaccessible distances. These questions will help you summarize what you learned.

Think about your answers to these questions. Discuss your idea with other students and your teacher. Then write a summary of your findings in wikispaces.

1. How can you estimate heights and distances you can’t easily measure with rulers or tape measures by using the following methods?

a. shadows and similar triangles

b. mirrors and similar triangles

c. small triangles nested within larger triangles

2. How can you decide whether a photo or drawing can be enlarged or reduced to fit a space without distorting the shapes?