Here's a special lesson about some special parallelograms. The fifth of seven parts in the Geometry - Quadrilaterals and Polygons unit focuses on the conditions for rectangles, rhombuses, and squares. Young mathematicians use these conditions to determine when given parallelograms are rectangles, rhombuses, or squares. They watch a video that works through several examples.

Concepts

rectangles, rhombus, squares, diagonal lines, angles, geometric proofs

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Instructional Ideas

• Use the corrective assignment as homework
  

Classroom Considerations

• Learners must be familiar with factoring quadratics
• Knowledge of the conditions for parallelograms is necessary
  

• This video is hosted on YouTube

Pros

• Shows each step of the solution process
• Includes an answer key for the worksheet
  

Cons

• None

Common Core

HSG-CO.C.11