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Recent Additions (Page 57 of 80)




Newton's Theorem, NewtonGauss Line.
Complete quadrilateral theorem. Using TracenPoche Dynamic
Geometry Software, Online
StepbyStep construction, manipulation, and animation.


Proposed Problem 74: Three Intersecting Circles.
Cyclic quadrilateral, Angles. 

Proposed Problem 73: Three Intersecting Circles.
Cyclic quadrilateral.


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


Proposed Problem 71: Cyclic Quadrilateral.


Interactive Mind Map of Euclid's Elements. 

Proposed Problem 70: Squares inscribed in a triangle, Similarity.


Morley's Triangle & Center: with interactive animation and
manipulation.


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


Proposed Problem 69: Square inscribed in a triangle, Similarity..


Tessellations Index.


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


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

Van Aubel's Theorem II: Triangle and Cevians. 

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


Proposed Problem 65: Right Triangle, Mindpoints.


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


Proposed Problem 64: Triangle, Incircle, Transversal.


Proposed Problem 63: Heptagon
Regular, Side and Diagonals. 

Proposed Problem 62: Square
Diagonal, Inscribed Circle. 

Lost Pyramids of Caral 1,
2,
3,
4,
5,
6,
7
Caral: the Mother of All Civilizations? 2,627 BC.


Machu Picchu and Sierpinski Triangle.
Equilateral
Machu Picchu and Sierpinski Tunel Effect.


Proposed Problem 61: Triangle, Trisection of Sides 

Taylor Circle Theorem Using TracenPoche Dynamic Software
StepbyStep construction, Manipulation, and animation. 

Proposed Problem 60: Isosceles triangle 

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

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