Similar Triangles 1

Find two similar triangles in plane sight. Given a figure composed of a parallelogram and a triangle, pupils identify two similar triangles and provide an explanation. Class members use the similar triangles to find two missing side lengths.

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CCSS: Designed
Instructional Ideas

  • Provide practice for the class to find similar triangles by decomposing other figures
Classroom Considerations

  • Individuals should know how to prove two triangles are similar
  • Need to know how to solve proportions
Pros

  • Provides an answer key that shows multiple ways to arrive at the solution
  • Contains instructional suggestions to address misconceptions
Cons

  • None
Common Core