In this Illustration students are given two similar triangles and are asked to find a missing side length. Students use patty paper and their understanding of transformations to help them find the corresponding sides, while in the process making a conjecture about parallel sides in nested triangles.
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Explore this site to learn more about the Common Core Standards for Mathematical Practice (SMP) and how they can be connected to the content standards. Use our Illustrations, centered on student dialogues, to see the Standards for Mathematical Practice in action.
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