Geometry and Trigonometry

Plane Geometry

What is plane geometry?

Plane geometry is simply the study of two-dimensional figures in a plane. Most mathematicians further define the plane as Euclidean (for more information about Euclidean geometry, see above). It examines such objects as circles, lines, and polygons.


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