[Free Registration/Login Required] Students will move the pentagon points to explore convex polygons. Click learn more to watch a video and click challenge me to answer a practice question.

This resource explores the science behind light and how mirrors reflect it. Also contains information on lenses both convex and concave.

This site provides definitions of different types of polygons and figures.

This site from the University of California deals with different applications and topics pertaining to triangles, particularly triangulation.

Students use this tutorial to investigate the refractive ability of converging and diverging lenses.

A comprehensive guide for learning all about concave shapes with definitions, the difference between concave and convex, examples, and practice questions.

This website, although mostly for selling artwork prints by M.C. Escher, provides a good picture of Escher's famous piece lithograph, "Convex and Concave." Includes some informative text.

Kids learn about lenses and light in the science of physics including concave, convex, converging, diverging, focal point, meniscus, and Plano lenses.

Florida State University offers an interactive Java applet demonstrating the object-image relationships for a concave mirror. The position of the object can be dragged along the principal axis and the location, orientation, and size of...

Ray diagrams are useful tools for determining the location of an image as produced by a concave mirror. All concave and convex mirror ray diagrams can be constructed from knowledge of the behavior of two rays. Learn here about ray diagrams.

Explore the effect of concave and convex mirrors. Combine concave and convex mirrors to design a fun house mirror that will create the distorted pictures of Melissa and Sam.

Ray diagrams are useful tools for determining the location of an image as produced by a concave mirror. Of all the rays which emanate from the top of the object arrow and are incident to the mirror, there are two rays whose behavior at...

Ray diagrams are useful tools for determining the location of an image as produced by a concave mirror. Of all the rays which emanate from the top of the object arrow and are incident to the mirror, there are two rays whose behavior at...

In Spanish. In this interactive unit learn how to calculate intervals of growth and decay, maximum and minimum value of a function, the intervals of concavity and convexity and the turning points of a function.

This website, although mostly for selling artwork prints by M.C. Escher, provides a good picture of Escher's famous piece lithograph, "Convex and Concave." Includes some informative text.

[Free Registration/Login may be required to access all resource tools.] This concept teaches students how to calculate exterior angles of regular polygons. Students examine guided notes, review guided practice, watch instructional videos...

[Free Registration/Login may be required to access all resource tools.] In this lesson students find the measure of the exterior angles of a polygon. Students examine guided notes, review guided practice, watch instructional videos and...

[Free Registration/Login may be required to access all resource tools.] What a lens is and what it does, concave and convex lenses.

This site defines a convex polyhedron in terms of vectors and matrices. A table of examples, as well as an illustration, are given. This site has numerous links to related Math World sites.

This website has basic definitions for most polygons, regular and irregular.

A discussion from Georgia State University of different types of mirrors and the images which they create. Discusses different instruments which use mirrors to produce images.

An investigation into how lenses behave. Students explore using convex and concave lenses in various ways and record their observations. They are then are directed to another site to try activities where they can manipulate virtual lenses.

This site from Georgia State University discusses the means by which mirrors and lenses are combined to produce an optical instrument which accomplishes a specific purpose. Good illustrations.

This calculus tutorial with curved mirrors includes narrative and video presentations as well as other interactive tools.