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Similar Triangles

Source: Building - Eoneren/iStock/Getty Images

Similar Triangles in the Real-World

Similar triangles can be used to solve a variety of real-world problems, such as in construction and in astrophysics.

Sources: Construction - DmitryPK/iStock/Getty Images;

Observatory - Cylonphoto/iStock/Getty Images

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Lesson Goals

  • Demonstrate that two triangles are similar using similarity rules.
  • Use similarity between triangles to solve for an unknown side length.
  • Construct an appropriate pair of similar triangles to solve a real-world problem.

Try This

An architect has been asked to design a bridge that will span a large canyon.

How can the architect determine an appropriate length for the bridge by only making measurements on one side of the canyon?