**Browse High School Geometry**

We've divided high school geometry into the following
subcategories. To search for items across all of these topics, see
the Searcher at the bottom of the page.

Euclidean/Plane Geometry

(includes proofs)

Conic Sections/Circles

(ellipses, parabolas, hyperbolas, ...)

Constructions

Coordinate Plane

Triangles/Polygons

Higher-Dimensional Geometry

(spheres, cylinders, cones, ...)

Polyhedra

(Platonic and Archimedean solids, prisms, ...)

Non-Euclidean Geometry

(elliptical/spherical, hyperbolic, projective, ...)

Practical Geometry

Symmetry/Tessellations