Students will engage in an exploration of how triangles can be used to figure out the sum of angles in a polygon. In Part A, they will first be guided towards identifying the relationship between the number of sides in a polygon and the number of triangles that make the polygon. In Part B, students, in a more open-ended task will look for the relationship that connects the number of sides in a polygon and the sum of angles of the polygon.

Math Concepts:
Interior Angle
Sum of Interior Angles in Polygon
Sum of Angles in Triangle
Polygon Names

MYP Related Concepts:
generalization
patterns
space

MYP Key Concepts:
form

MYP Global Context:
Orientation in Space and Time