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 Perimeter:  The sum of the lengths of the sides of a polygon.

Apothem and Area: Explore the relationship between the apothem, perimeter, and area of a regular polygon.

Transforming Triangles: What is the perimeter of a rectangle formed from an equilateral triangle?

Minimum Perimeters: Find the minimum perimeter for a rectangle with a given area.

Biggie Size It!: Explore changes in the perimeter and area of a triangle when you increase its size.