
Circles Index
(Page 1 of 10)




Circle definition.


Circular Shape: Geometry in Borax, Boron Mine, California, Map and News. 

Chord.
Index.
A chord of a circle is the line segment joining two points on the
circle.


Diameters and Chords,
Theorems and Problems.
Index.


Circular Shape: Geometry in Minera Escondida, Copper Mine, Chile, Map and News. 

Perpendicular Chords.
Index.
Theorems and Problems.


Semicircle.
Index.
Theorems and Problems.


Circular
Sector.
Index.
Theorems and Problems.


Circular Segment. Index.
Theorems and Problems.


Sagitta,
Definition. 

Circle Tangent Line.
Index.
Theorems and Problems.


Intersection of a Line with a Circle


Circle Area.
Index.
Theorems and Problems.


Concentric
Circles.
Index.
Theorems and Problems.


Intersecting Circles Index.
Theorems and Problems. 

Tangent Circles Index


Common Chord to two circles.
Theorems and Problems. 

Arbelos, Theorems and Problems
Three tangent semicircles with collinear
centers.
Index 

Circumcircle
Index.


Cyclic Quadrilateral.


Cyclic Quadrilateral with Perpendicular Diagonals.


Concyclic
Points.


GeoGebra, Dynamic Geometry:
Nine Point Circle
HTML5 Animation for Tablets (iPad, Nexus..) 

Lunes of Hippocrates


van Lamoen Circle  Index. 

Circle Inscribed in a Square, Theorems and Problems.
Index. 

Butterfly theorem proof
HTML5 Animation for iPad and Nexus. 

GeoGebra,
Dynamic Geometry, Euclidean Egg with 8 Arcs in 5 Steps, StepbyStep Construction
HTML5 Animation for Tablets (iPad, Nexus) 

iPad Apps: Springle by Bolasol Inc. Geometric Art: Squares and Pentagons 
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