7.7 The student, given appropriate dimensions, will apply area formulas in practical situations.

Hands-On Activities

  • Shodor This activity is called "Shape Explorer". The students will find the area and perimeter of irregular polygon.
  • interactive Notes This is Learn Alberta’s Math Continuum page. Click on the Area of Polygons part 2 to explore formulas and dividing figures into triangles and rectangles.

Other Web Sites

  • CIMT Click in Unit 9. This is a lesson on area and perimeter of a rectangle with many interactive practice problems.
  • ExploreLearning Teachers have to assign the Area of Parallelograms-Activity B to their classes.
  • Larson´s Software Students need to be enrolled by their teachers. Click on the Geometry in the Plane, then click on Area of a Rectangle.

Lesson 3-3: Applying Area Formulas



How is the area of the pentagon found using triangles?

What is the area of the pentagon?

Would this techinque work with other polygons?
How many triangles would you use with -
  a rectangle,
  a hexagon,
  or an octagon?