

Online Geometry: Circles, Theorems and Problems


Circles  Table of Content
(Page 21)




Proposed Problem
72: Intersecting Circles. Cyclic
quadrilateral, Chords, Parallel.


Geometric art of triangle centers visual summary
Delaunay Triangulation, Circular Random Composition, iPad Apps. 

Proposed Problem
71: Cyclic Quadrilateral.


Schiffler Point: Four Euler Lines with interactive animation and
manipulation.


Artwork of Geometry Problem 1174, Triangle, Angle, Delaunay Triangulation, Circular Random Composition, iPad Apps. 

Feuerbach Points and NinePoint Circle with interactive
animation, manipulation, and stepbystep construction.


Incenter, Excenter, Incircle, Excircle Using TracenPoche Dynamic Software
StepbyStep construction, Manipulation, and animation. 

Four Circles
Theorem Using TracenPoche Dynamic Software
StepbyStep construction, Manipulation, and animation. 

Three
Tangent Circles
Theorem Using TracenPoche Dynamic Software
StepbyStep construction, Manipulation, and animation. 

Three Circles
Theorem Using TracenPoche Dynamic Software 

Proposed Problem
68: Triangle, Incircle, Inradius, Tangent, Similarity.


Proposed Problem
67: Triangle, Circumcircle, Angles, Cyclic Quadrilateral.


Proposed Problem
66: Triangle, Excircle, Tangents, Geometric Mean.


Sangaku Geometry Theorem: Cyclic Quadrilateral.
Inradii, Rectangle. 
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Email  By
Antonio Gutierrez






