Understanding these fundamental concepts lays the foundation for exploring more advanced topics in geometry. This lesson introduces these basic geometric elements with definitions, examples, and …

This Basic geometry and measurement course is a refresher of length, area, perimeter, volume, angle measure, and transformations of 2D and 3D figures. If you are learning the content for the first time, …

Geometry is all about shapes and their properties. If you like playing with objects, or like drawing, then geometry is for you!

Dec 7, 2025 · This article covers all the basics of geometry, including points, lines, segments, rays, planes, and angles. You’ll also learn a bit about postulates, theorems, and proofs.

Geometry (from the Ancient Greek: geo- "earth", -metron "measurement") is a branch of mathematics, that is primarily concerned with the shapes and sizes of the objects, their relative position, and the …

This video explains and demonstrates the fundamental concepts (undefined terms) of geometry: points, lines, ray, collinear, planes, and coplanar. The basic ideas in geometry and how we represent them …

Geometry comes from the Greek meaning ‘earth measurement’ and is the visual study of shapes, sizes and patterns, and how they fit together in space. You will find that our geometry pages contain lots of …

Master Basic Geometry with our comprehensive guide, featuring essential concepts, step-by-step examples, and practice problems.

Essential stuff for describing the world around you. 1. Lines and angles. 2. Related angles. What about angles bigger than 360 degrees? 3. Triangles. See if it's really true, and then prove it! They have two …

Discover how intuitive geometry can be when you keep your assumptions simple and use your own logic and reasoning to set up your calculations. This fundamentals course will introduce you to angle …