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Recent Additions (Page 80 of 80)






Simson Line. A proof
of Simson line with animation. 


New version of
The Raft of the Medusa.
Inspiration for Problem solving with fractals and animation.
Languages: English,
Spanish and
Traditional Chinese.
The Raft of the
Medusa: Video 


Archimedes and the Rhombicuboctahedron. Archimedes the Geometer with
animation.



Johnson's Theorem. Three equal circles pass through a common point...
Introduction with animation.



Varignon and Wittenbauer paralellograms. Quadrilateral: midpoints and
trisection points of the edges.



Desiderata: Max Ehrmann's Poem for a Way of Life. Problem Solving
inspiration with animation.
See also: Spanish
version 


Inca
Music. One of the bestknown Inca folk tune in the world (due
to Simon and Garfunkel's interpretation) 


Van Aubel's Theorem.
Quadrilateral with Squares. Proof with animation.



Butterfly Theorem
Proof with animation. 


Butterfly Theorem: Puzzle. 


"Inca City" on Mars with
animation. 


Langley's Problem
Adventitious angles. 20° isosceles triangle with animation.



Top Ten Reasons to Enjoy
Geometry with animation.



Triangle with Squares
Problem



Sangaku Problem. The
incenters of four triangles in a cyclic quadrilateral form a rectangle. 


Cuzco.
Inca Empire Capital.



Machu Picchu,The
Lost City of the Incas. 


The Lord of Sipan. 


The Incas

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