Polygons

Online

NLVM: Tesselations

http://nlvm.usu.edu/en/nav/topic_t_3.html

NLVM: Tesselations allows the user to practice continuously creating tesselations from a variety of shapes, such as triangles, squares, hexagons, octagons, and dodecagons.

NLVM: Pattern Blocks

http://nlvm.usu.edu/en/nav/topic_t_3.html

NLVM: Pattern Blocks is a tool for creating and understanding patterns. Create multiple patterns using shapes like triangles, squares, rhombuses, trapezoids, and hexagons.

ExploreLearning: GeoBoard - The Pythagorean Theorem

http://explorelearning.com/index.cfm?method=cResource.dspView&ResourceID=221

The ExploreLearning: Geoboard - Pythagorean Theorem Gizmo is a great interactive GeoBoard for drawing and demonstrating different types of polygons. With the click of a button, you can display the length of all of the sides, the area, and any right angles.

Offline/Local

Geoboard

a. Windows Users: http://www.efdlrs.com/~paec/resource_software/geo95.exe

b. Mac Classic Users: http://www.efdlrs.com/~paec/resource_software/geocomputerinstaller.hqx

Use this fun geoboard to create geometric shapes. Customizable features include colors. Additional supports include a perimeter and area calculation tool.