Basic Principles of Geometry

Interested in learning about geometry? This beginner math lesson introduces the basic building blocks of geometry, like lines, angles, and points.

Now that you know the basic building blocks of geometry—such as lines, rays, and angles—learn how to draw and denote them properly in this beginner math lesson.

Did you know there could be eight triangles within one quadrilateral figure? In this lesson, learn how to identify and denote angles within geometric figures.

Ready to start denoting more challenging angles? In this beginner geometry lesson, practice naming angle vertices and sides, and learn about straight angles.

Need help understanding unions and intersections in your geometry homework? This lesson from Math Fortress walks through practice questions for new students.