What is a Trapezoid? (Part 1)

This What is a Trapezoid? (Part 1) activity & project also includes:

Challenge your class to construct a definition for trapezoids. Looking at four examples and four non-examples, young scholars individually create definitions and use them to classify an unknown shape. Allow for small group and whole-class discussions in order to reach agreement on a single definition for trapezoids. A great activity for identifying distinguishing characteristics of different shapes.

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CCSS: Designed


  • Creating a definition of trapezoids develops students' critical thinking skills
  • Non-examples strategically chosen to guide students toward a correct definition of trapezoids
  • Uses collaboration to support learning about trapezoids

  • Requires a prior understanding of quadrilaterals and parallel lines
Common Core