Geometry, Topology and Art

http://www.cromp.com/tess/home.html
Andrew Crompton Tessellations

http://www.ies.co.jp/math/java/geo/san180/san180.html
Angles of Triangle (Java)

http://agutie.homestead.com/files/index.htm
Antonio Gutierrez' Geometry Site
a visually stunning geometry site designed by Peruvian teacher Antonio Gutierrez

http://agutie.homestead.com/files/clifford1.htm
Clifford’s circle chain theorem - in the ordinary Euclidean plane, a "sequence or chain of theorems" of increasing complexity, each building on the last.

http://agutie.homestead.com/files/geometry_glossary1.htm
The Landscape of Geometry Terms with randomly selected terms, depending on size and location, and zoom.

http://www.artlandia.com
Artlandia

http://www.saltire.com/applets/geometry.htm
Basic applets

http://www-cabri.imag.fr/sites/sites-e.html
Cabri Géomètre Websites

http://www.circlescribe.com
Disk Compass

http://www.precisionstrobe.com/jc/eschertiles/eschertiles.html
Escher Tile Gallery

http://www.7stones.com/Homepage/Publisher/p3.html
Explore the Parabola

http://www.keypress.com/sketchpad/sketchdemo.html
Geometer's Sketchpad - download demonstration and activities

http://www.scienceu.com/geometry/
Geometry Center: 'Shapes, patterns, symmetry'

http://www.insects.org/ced4/japanese_crests.html
Japanese Family Crests or 'Ka-mon' (for reflective and rotational symmetry)
images courtesy of Dover Books

http://britton.disted.camosun.bc.ca/jbkamon.htm
Japanese Family Crests or 'Ka-mon' (for reflective and rotational symmetry)
images provided by Jill Britton

http://www.keypress.com/sketchpad/java_gsp/download_center.html
Java Sketchpad download demonstration and activities

http://www.pims.math.ca/knotplot/knot-theory/knot-theory.html
Knots and their Theory

http://www.ies.co.jp/math
Manipula Maths (Java)

http://www.netcomuk.co.uk/~jenolive/homevec.html
Maths Help - Working with vectors

http://www.softronix.com
Microsoft Windows Logo

http://www.dartmouth.edu/~matc/math5.geometry/unit5/unit5.html
Polygons and Tilings

http://www.cut-the-knot.com/pythagoras
Pythagoras' Theorem (Java): 37 different proofs

http://www.cut-the-not.com/Curriculum/Geometry/ArrangePyth.html
Pythagoras' Theorem (Java): Dissection proof

http://www.georgehart.com/
Polyhedra / Geometric Sculpture

http://britton.disted.camosun.bc.ca/jbsymteslk.htm
Symmetry and Tessellation

http://www.c3.hu/perspektiva/adatbazis/abrae.php3?MUID=30&LN=0
Regular and stellar polygons

http://140.114.32.3/disk3/cabrijava/vanschooten.htm
Van Schooten's Ellipse (Java applets)

http://www.style-line.com
Wheel Trim Designs (for reflective and rotational symmetry)