Area of a Triangle

• A Rectangle is a special Parallelogram in which all its angles are 90 degrees.
• To find the area of a Rectangle, multiply its Length by its Width:
• Area of Rectangle = Length x Width

Areas

• What is the area of the new Parallelogram?
• Hint: Compare this area to the area of your old Rectangle.
• Hence, what is the formula for the area of a Parallelogram?

Problems:

1. What is the area of your parallelogram in
   • square inches?
   • square centimeters?
2. What is the area of the parallelogram below?

Examples - Finding areas of Triangles and Composite Figures

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