Math Is Fun
Math Is Fun: Making 3 D Solids
This tutorial features templates and instructions to make the following solids: tetrahedron, cube, octahedron, dodecahedron, and icosahedron.
University of Cambridge
University of Cambridge: Nrich: Games the Triangle Game
Use this game to improve your knowledge and understanding of triangles and naming vertices. Just read and follow the instructions! [Requires Java.]
University of Cambridge
University of Cambridge: Nrich: All in the Mind
You will have to use visualization to help you solve this challenge. At this one page website, you will be able to check your solution.
Math Open Reference
Math Open Reference: Square Inscribed in a Circle
Learn about a square inscribed in a circle with this handy reference guide. Provides a detailed definition and an interactive activity that enhances further explanation. Includes links to related topics.
Wikimedia
Wikipedia: Hyperbola
This site from the Wikipedia encyclopedia has formulas and examples of hyperbolas. A detailed graph and several formulas and examples are given along with several links to additional information on related subjects.
Math Words
Math words.com: Vertices, Ellipse
Basic definition for the vertex of an ellipse. Shown in a pictoral example as well.
Math Words
Math words.com: Vertices, Hyperbola
A basic definition for what the vertices on a hyperbola are.