Jugami › Geometry
Geometry
Shapes, space, and proving why things are true.
This is a free high school geometry course for grades 9–10, and for anyone reviewing before a test. Each unit explains one idea with diagrams and ends with instant-feedback practice. The course starts with right triangles and the Pythagorean theorem; later units will cover angles and parallel lines, triangle proofs, similar shapes, circles, and area and volume.
Units
The first unit is live, with more on the way.
- Live
The Pythagorean Theorem
a² + b² = c², a visual proof, an interactive explorer, triples, history, and practice problems.
Next: Angles and Parallel Lines.
About these lessons
Sources are listed at the end of each lesson. Practice games save your best score only on your own device.