
Resources
Click on a spirolateral in one of these galleries to display a fullsize version; see a selfrunning demonstration of a variety of spirolaterals, or generate one of your own and see all the reversals. "The Art of...
This lesson from Illuminations focuses on quadrilaterals. Students will start with the diagonals of a shape and then deduce the type of quadrilateral that surrounds them. An interactive applet is included that will help...
Projects that use realtime data available from the Internet, and collaborative projects that use the Internet's potential to reach peers and experts around the world. The site lists currently sponsored projects by level...
This geometry lesson from Illuminations helps students understand the relationships between the distances from a point inside a regular polygon to each side. The website includes an interactive applet to help...
This math unit from Illuminations asks students to inscribe and circumscribe regular polygons. They will then analyze the area of the polygons, using either an applet or a graphing calculator. The unit includes two...

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