In GeoGebra can using. 2 tools find length, area and perimeter of polygons.

The 2 tools are area -button and length -button.

Area

1. Once you have kontrueret a polygon, select area -button.
2. Tap inside the polygon.
3. This displays a text area of ​​the polygon.

Length

1. Once you have kontrueret a polygon, select length -button.
2. Press one of the polygon's sides or 2 points at a time.
3. This displays a text with the side length of the polygon.

Circumference

1. Once you have kontrueret a polygon, select length -button.
2. Tap inside the polygon.
3. This displays a text with the perimeter of the polygon.

Video