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Topic: Dynamic Geometry Sketches Updated, May 2011
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Michael de Villiers

Posts: 281
Registered: 12/3/04
Dynamic Geometry Sketches Updated, May 2011
Posted: May 18, 2011 10:15 AM
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My Dynamic Geometry Sketches website at http://math.kennesaw.edu/~mdevilli/JavaGSPLinks.htm has been updated with the following (new & revised) sketches:
1) Cyclic quadrilateral rectangle result (new)
2) A (novel) generalization of the theorem of Pythagoras (new)
3) Hierarchical quadrilateral tree (new)
4) Octagon centroids forming parallelo-octagon (updated)
5) Similarity of parabola (updated with additional sketch)

and the Student Explorations section with:
1) Bicentric quadrilateral property (new)
2) Contruct a parallel hexagon with Geo-Next (updated)
3) Miscellaneous transformations (of figures and graphs) (updated)
4) Pi in other geometries (new)
5) Quadrilateral Inequality involving Perimeter & Diagonals (updated with additions)
6) Rectangle and Rombus angle trisection (new)

My homepage at http://mysite.mweb.co.za/residents/profmd/homepage4.html has also been updated with the following new items:
1) A primary mathematics worksheet (1992) on "Order of operations"
2) mathematical/mathematics education quote
3) mathematics/science cartoon
4) May 2011 Math e-Newsletter with information about math books, conferences, websites, points to ponder/quotes, humour, and a little teaser problem.

Hope some find some of these interesting or useful.

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