Quadrilaterals

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Quadrilaterals

• By Dara L. Iwankovitsch

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What is a Quadrilateral?

• A four sided figure
• Because it has four sides, a quadrilateral also
  has four angles
• The angles will all add up to 360
• There are five most well known types of
  quadrilaterals. They are
• Rhombus
• Parallelogram
• Rectangle
• Square
• Trapezoid

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What is a Rhombus?

• Has four equal sides
• Sometimes called a diamond

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What is a Parallelogram?

• Has two sets of parallel sides
• Opposite sides are parallel and equal
• Opposite angles are equal

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What is a Rectangle?

• Rectangles are special parallelograms
• Two sets of parallel sides
• Opposite sides are parallel and equal
• All angles are equal
• Each angle is 90

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What is a Square?

• A square is a special rectangle
• Opposite sides are parallel
• All angles are equal
• Each angle is 90
• All sides are equal

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What is a Trapezoid?

• One set of parallel sides

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Additional Online Resources

• Math.com Quadrilaterals
• This site will tell you some more surface and in
  depth information about quadrilaterals. Start
  with the First Glance step and progress through
  the rest of the steps. The information in
  Examples and Workout require a little more in
  depth thinking.
• Primary Resources Shape Reveal
• To use this site please click on the Shape
  Reveal Link in the list of online activities.
  From there you may select either the
  quadrilaterals or the quadrilaterals with
  rotation option. Hit the arrow button to begin.
  You will see different types of quadrilaterals.

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Additional PDF Resources

• Quadrilateral Worksheet
• Answers to Quadrilateral Worksheet