My Main GeoGebra Page

Subject	Description	HTML Link
Triangles	Try to construct a triangle to see the relationship between angles and sides.	https://www.geogebra.org/classic/wwghpxy7
Triangles	Another example of the above.	https://www.geogebra.org/classic/dunwgfhf
Triangles	This applet has a button to generate three random side lengths from {1, 2, 3, 4, 5, 6}. Then the triangle is built, if possible. It can be used to explore the triangle inequality.	https://www.geogebra.org/classic/kdyfph49
Triangles	This applet is the same as the one above, but it also has an option to view the angles. This can be used to investigate the angle sum and the relationship between angles and side lengths.	https://www.geogebra.org/classic/m5uevrra
Triangles	This applet is similar to the above two, but the user must try to build the triangle.	https://www.geogebra.org/classic/z3pnhmku
Triangles	Here is another one of the SSS applets. This one allows the user to enter any three side lengths.	https://www.geogebra.org/classic/s8emsshg
Triangles	This applet allows users to investigate the relationship between a^2+b^2 and c^2	https://www.geogebra.org/classic/rcyjwawk
Triangles	This applet shows Ceva's Theorem.	https://www.geogebra.org/classic/q4dqth4k
Triangles	This applet shows The Theorem of Menelaus.	https://www.geogebra.org/classic/tc6ybp2t
Triangles	This applet shows the Nine Point Circle of a triangle.	https://www.geogebra.org/classic/rhddum6m
Quadrilaterals	This applet simulates a GeoBoard. It has "rubberbands" that can be used to explore quadrilaterals.	https://www.geogebra.org/classic/cdnegehb
Quadrilaterals	This applet contains moveable quadrilaterals and a Venn diagram with two loops.	https://www.geogebra.org/classic/evc5cd6h
Quadrilaterals	This applet contains moveable quadrilaterals and a Venn diagram with three loops.	https://www.geogebra.org/classic/yv63d6uy
Circles	This applet contains a demonstration of the Chord-Segment Product Theorem.	https://www.geogebra.org/classic/gfrxbqjm
Circles	This applet contains a demonstration of the Inscribed Angle Theorem.	https://www.geogebra.org/classic/dqxwezdu
Circles	This applet contains a demonstration of the Secant-Segment Product Theorem.	https://www.geogebra.org/classic/pbs7nzdy
Circles	This applet contains a demonstration of the Tangent-Secant Segment Product Theorem.	https://www.geogebra.org/classic/yg9wqub2
Circles	This applet contains a demonstration of the Tangent-Chord Angle Theorem.	https://www.geogebra.org/classic/rbgguqrd
Circles	This applet contains a demonstration of the Two-Chord Angle Theorem.	https://www.geogebra.org/classic/z6pkndpd
Circles	This applet contains a demonstration of the Two-Secant Angle Theorem.	https://www.geogebra.org/classic/mzbgnryf
Area and Perimeter	This applet simulates a GeoBoard. It has "rubberbands" that can be used to explore area and perimeter of polygons.	https://www.geogebra.org/classic/g4mkczp4
Area and Perimeter	This applet simulates a GeoBoard. It has a "rubberband" that can be used to explore area and perimeter of polygons. This can be used to investigate Pick's Theorem.	https://www.geogebra.org/classic/pbeqn3qm
Pi	This applet is to estimate Pi using the perimeter of polygons.	https://www.geogebra.org/classic/hx48qdtv
Transformations	This applet contains a draggable triangle and a button to generate a random translation vector and the translated image of the triangle.	https://www.geogebra.org/classic/jze6fkxu
Transformations	This applet is the same as the one above but has the option to view the vector.	https://www.geogebra.org/classic/dqgqdqsk
Transformations	This applet has a draggable triangle, a fixed center, and a button to generate a random angle and the rotated image of the triangle.	https://www.geogebra.org/classic/bed76dar
Transformations	This applet has a draggable triangle, and generates a random composition of a translation and dilation. Students can try to find the coordinates for the vector of translation and the scale factor of the dilation.	https://www.geogebra.org/classic/wrvcyrwz
Transformations	This one includes compositions of dilations with reflections, rotations, and translations.	https://www.geogebra.org/classic/g8y6xkdv
Transformations	This applet has a draggable triangle and its image under a random rotation, translation, or reflection. A button allows users to generate a new random transformation.	https://www.geogebra.org/classic/tryk4pra
Transformations	This applet is the same as the one above, but it includes the option to be told the transformation (and shown the line of reflection, center and angle of rotation, or translation vector).	https://www.geogebra.org/classic/ts6b588x
Transformations	This one is the same as the one above, but it also includes glide transformations.	https://www.geogebra.org/classic/jejbbuq7
Transformations	This applet is to practice finding the coordinates of a triangle that has been rotated about the origin. The user can generate random problems and check his or her answers.	https://www.geogebra.org/classic/s9rverg4
Transformations	This applet is the same as the one above, but the center of the rotation is draggable. GeoGebra's right click is enabled for this applet. So the you can right click on the blue point and view the "object properties" to see and/or change its coordinates.	https://www.geogebra.org/classic/rwm68ya9
Transformations	This applet is to preactice finding the coordinates of a triangle that has been reflected across the line y = mx.	https://www.geogebra.org/classic/b4z3sym9
Transformations	This applet is to preactice finding the coordinates of a triangle that has been reflected across the line y = mx+b.	https://www.geogebra.org/classic/qdzyr3sf
Transformations	This applet is to practice finding the coordinates of a triangle that has been dilated. The user can generate random problems and check his or her answers.	https://www.geogebra.org/classic/shxbpptk
Transformations	This applet shows the inversion of a point about a circle.	https://www.geogebra.org/classic/k78adxv5
Transformations	This applet shows the inversion of several points on a circle about another circle.	https://www.geogebra.org/classic/mqrzwswy
Transformations	This applet shows the inversion of several points on a line about another circle.	https://www.geogebra.org/classic/wvgcwnb9
Proofs	Proof of Exterior Angle Theorem	https://www.geogebra.org/classic/hjmb3baw
Proofs	This applet outlines why the Euclidean Parallel Postulate implies the existence of non congruent similar triangles.	https://www.geogebra.org/classic/vtqs4dzy
Proofs	This applet outlines why the existence on non congruent similar triangles implies the Euclidean Parallel Postulate.	https://www.geogebra.org/classic/dzkhzcmx https://www.geogebra.org/classic/t5qtgmvr (another version)
Proofs	Proof outline that if a line intersects three parallel lines making congruent segments, then any other line intersecting them does too.	https://www.geogebra.org/classic/dzm9afmy
Proofs	Proof outline of the existence of the centroid and that it is 2/3 the way from vertex to midpoint (using the above result)	https://www.geogebra.org/classic/v5fq8852
Proofs	Proof that any two parallelograms with the same height and base length have the same area (and so it is base times height like the rectangle)	https://www.geogebra.org/classic/v5fq8852
Proofs	Proof of Basic Proportionality Theorem (lines parallel to a base cut a triangles sides into the same proportions)	https://www.geogebra.org/classic/gjm9dp44
Proofs	Proof of Two Chord Angle Theorem	https://www.geogebra.org/classic/br7pm9gc
Proofs	Proof of the Pythagorean Theorem using similar triangles	https://www.geogebra.org/classic/mdmk6sdy
Hyperbolic	The Poincare Disk Model of Hyperbolic Geometry	https://www.geogebra.org/classic/ymctzx4z
Hyperbolic	This applet shows how a geodesic is formed with inversion in the unit disk.	https://www.geogebra.org/classic/dsbk4bzv

The following files were saved as HTML5 applets. They should work on Ipads as well as computers.

Subject	Description	HTML File
Constructions	Construction of equilateral triangle	https://www.geogebra.org/classic/kfpf3kvp
Constructions	Construction of a perpendicular bisector with compass and straightedge.	https://www.geogebra.org/classic/ehakcnmb
Constructions	Construction of a parallel line through a point by copying an angle.	https://www.geogebra.org/classic/eanvkcwk
Construction	Construction of a perpendicular line through a point on a line	https://www.geogebra.org/classic/qhtr8vz8
Construction	Euclid’s 2^nd Postulate: Construcing a segment with endpoint A that is congruent to segment BC with straight edge and collapsible compass.	https://www.geogebra.org/classic/njh9rhrv