They're all parallelograms—but unique in their own special ways. Pupils view an instructional video to investigate the properties of rectangles, rhombuses, and squares. They use these properties to solve for missing sides or angles, including problems requiring algebraic methods.

Concepts

rectangles, rhombus, squares, diagonal lines, angles

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Instructional Ideas

• Have the class keep a running list of theorems regarding quadrilaterals
  

Classroom Considerations

• This is the fourth of seven installments in the Geometry - Quadrilaterals and Polygons unit
• Scholars must be familiar with angle relationships, such as alternate interior angles and supplementary angles
  

• This video is hosted on YouTube

Pros

• Includes printable worksheets
• Provides an answer key for instructors
  

Cons

• None