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Lesson Materials

Lesson 3-4 Polygon Areas
Area of a Parallelogram

READ the instructions on the right and INTERACT with the GeoGebra applet below.


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Objective

6.11 The student will determine if a problem situation involving polygons of four or fewer sides represents the application of perimeter or area and apply the appropriate formula.

 Directions Close 

Move the green point.

  1. What the sum of the bases of the triangles that compose the regular polygon?

  2. What is the height of those triangles?

  3. After verifying the transformation of a regular polygon of 16 sides, imagine another one of 360 sides.
 Directions 2 Close 
  1. What the sum of the bases of the triangles that compose the regular polygon?

  2. What is the height of those triangles?

  3. After verifying the transformation of a regular polygon of 16 sides, imagine another one of 360 sides.

 Hands-On Activities Close 
Explore the area of rectangles and squares
 Other Web Sites Close 
  1. LearnAlberta

Select topic 3 and 4 under Shape and Space.

 Puzzles & Problems tangram Close 
Research the origins of the parts of the names for geometric figures.
  1. Prefixes indicating number
  2. -gon
  3. -hedron