Now posted on the Math 20-2 website is October's Featured Topic.

Explore Interior Angles of Polygons -- Regents Exam Prep Center

(Math 20-2: Properties of Angles and Triangle)

Mathematical Processes: T, V, R

This java applet helps students visualize

• 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.