Midpoints of Sides of a Quadrilateral

Verify a figure by using coordinates. Pupils calculate the coordinates of the midpoints of the sides of a quadrilateral. They then use the coordinates to show the resulting figure is a parallelogram. 

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CCSS: Designed
Additional Tags
Instructional Ideas
  • Review the conditions necessary to show a quadrilateral is a parallelogram
Classroom Considerations
  • Individuals should be comfortable finding the midpoint of a line using coordinates
  • Classmates need to know how to show lines are parallel on the coordinate plane
  • Includes descriptions of misconceptions at different levels of understanding
  • Provides questions to ask class members based on their understanding
  • None
Common Core