Geometry and Trigonometry

Measurements and Transformations

What is the perimeter of a two-dimensional geometric figure?

The perimeter of a two-dimensional figure is what we perceive as the “outside” of the object. Mathematicians describe a perimeter more precisely as the sum of the lengths of a polygon’s sides; the perimeter of a simple closed curve is measured as its length.


This is a web preview of the "The Handy Math Answer Book" app. Many features only work on your mobile device. If you like what you see, we hope you will consider buying. Get the App