Trapezoids: Lesson

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Using the definition of a trapezoid, the segment within a large playlist on basic geometry explains other properties of trapezoids. The video introduces the special properties held by isosceles trapezoids.

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Instructional Ideas
  • Lead a discussion on how the properties of parallel lines and a transversal can be used to show properties of trapezoids
Classroom Considerations
  • Uses the exclusive definition of trapezoids
  • Pupils should be comfortable with solving linear equations involving averages
  • Works several problems involving properties of trapezoids and isosceles trapezoids
  • Links to other trapezoid resources
  • The audio is slightly distorted