Explore Interior Angles
of Polygons
Topic Index | Geometry Index | Regents Exam Prep Center


 

Explore Interior Angles of Polygons
(using JavaSketchpad - seen below)

If you have access to Geometer's SketchPad 4 software, you can download a more complete polygon investigation program from MathBits.com.

Observe:

  • how the angles within each triangle change size as a new polygon is formed.
  • how the SUM of the angles within each polygon remains the same.
  • how many triangles make up each polygon.

Drag any points to form new polygons. 

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