G.I.A. JAVA GALLERY

GEOMETRY IN ACTION (G.I.A.), from Key Press, is a discovery-oriented book of topics for original sketch-writing on The Geometer's Sketchpad.

Students who create their own sketches really learn geometry!

If your computer has a Java browser, take a look at some of the sketches listed below, especially those marked with asterisks. Then visit Geometry in Action at Key Press.


Brocard

Circles ***

Centroids

Conic5Points

Deltoid

Deltoid1 ***

Ellipses

EulerEnvelope ***

EulerLine

FermatPoint

FeuerbachPoint

Humanoid

Humanoid1 ***

InterTriangles

InvertCircle ***

InvertLine

IsogonalConjugate

JapaneseTempleProblem

LocusOfFocus

NinePointCircle

Parabola

PonceletPoint

PonceletPorism ***

RectangleOfIncenters

Rotate ***

SimpleHarmonicMotion ******

Tessellate


Other links:

Triangle Centers (access to lists of classical and recent centers)
Encyclopedia of Triangle Centers