Geometry is, along with arithmetic, one of the oldest branches of mathematics. A mathematician who works in the field of geometry is called a geometer.

Learn geometry—angles, shapes, transformations, proofs, and more.

Geometry is the study of shapes, sizes, positions, and properties of space. It covers everything from basic angle relationships and triangle properties to circles, area, volume, and coordinate geometry. …

Feb 27, 2026 · Geometry, the branch of mathematics concerned with the shape of individual objects, spatial relationships among various objects, and the properties of surrounding space.

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 …

Mar 13, 2026 · Explore our directory of Geometry tutorial videos and get ready for your test using our exam review tips. Start preparing today!

6 days ago · GoGeometry.com offers free educational resources and over 1600 illustrated problems to help geometry students practice and learn.

Two types of geometry are plane geometry and solid geometry. Plane geometry deals with two-dimensional shapes and planes (x-axis and y-axis), while solid geometry deals with three …

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

Jan 23, 2026 · Geometry is a branch of mathematics that studies the properties, measurements, and relationships of points, lines, angles, surfaces, and solids. From basic lines and angles to complex …