Curated OER
The Io Plasma Torus
In this plasma torus worksheet, students solve 5 problems including finding the dimensions of the Io torus, determining the formula for the volume of a torus, finding the actual volume of the Ion torus and finding the amount of sodium...
Cuemath
Cuemath: 3 D Shapes
Introduces the concept of 3D shapes by learning the definition, types, properties, and three dimensions. Check-out the solved examples for better understanding and try your hand at solving a few interactive questions at the end of the page.
National Council of Teachers of Mathematics
The Math Forum: Ellipsoid, Torus, Spherical Polygon Formulas
Curious as to what an ellipsoid is? Dr. Math provides a picture and a brief description. This site also has information pertaining to a torus, and spherical polygon.
Oswego City School District
Regents Exam Prep Center: Polyhedra
View and learn about five different polyhedra: tetrahedron, octahedron, icosahedron, hexahedron, and dodecahedron. Learn what Euler's Polyhedra Theorem is, and see examples of non-polyhedra as well.
Math Is Fun
Math Is Fun: Torus
Students learn about a torus. The resource consists of facts, formulas, definitions, and images.