Click on the blue points and drag them to change the figure.
 Manipulative 1  Perimeter of a Polygon Created with GeoGebra. 

The perimeter of a
polygon,
is the edges, or boundary of the polygon, or the length of those edges. The
perimeter of a simple closed curve is the boundary
of that curve or the length of the boundary. The perimeter of a circle is called
a circumference.
Click on the blue points in manipulative
1 and drag them to change the figure. The perimeter is the red lines of the
polygon. Manipulative 2
shows the perimeter of an ellipse.

Click on the blue points and drag them to change the figure.
 Manipulative 2  Perimeter of an Ellipse Created with GeoGebra. 
