

Recent additions (Page 16), Online
Learning

Go Geometry from the Land of the
Incas  Recent
Additions (Page 16)




Geometry Problem 627
Cyclic Quadrilateral, Congruence, Concyclic Points. 

Geometry Problem 626
Triangle, Distance from the Incenter to an Excenter. 

Geometry Problem 625
Triangle, Parallel Lines, Congruence, Angle Bisector. 

Geometry Problem 624
Triangle, Incenter, Excenter, Incircle, Excircle, Similarity. 

Geometry Problem 623
Triangle, Incenter, Excenter, Incircle, Excircle, Concyclic Points. 

Geometry Problem 622
Square with Perpendiculars, Transversal, Congruence. 

Geometry Problem 621
Three Rectangles, Diagonals, Centers, Angles. 

Geometry Problem
620
Three Rectangles, Diagonals, Centers, Angles. 

Geometry Problem
619
Triangle Area, 30 Degrees, Incircle, Incenter, Tangent. 

Geometry Problem
618
Triangle Area, 60 Degrees, Incircle, Incenter, Tangent. 

Geometry Problem
617
Right Triangle Area, Incircle, Incenter, Tangent, 90 Degrees. 

Geometry Problem
616
Parallelogram, Diagonals, Intersecting Lines, Parallel Lines. 

Geometry Problem
615
Right Triangle with a Square, Diagonals, Center, Area of Quadrilateral. 

Geometry Problem
614
Parallelogram, Diagonals, Intersecting Lines, Parallel Lines. 

Geometry Problem
613
Altitude of a Triangle, Perpendicular, Collinear Points. 

iPad, iPhone Apps:
iCrosss, 3D Polyhedron  Video.
Application supports such kinds of polyhedra as regular polyhedra
(Platonic solids), Pyramids, Prisms, Antiprisms and Archimedean solids and duals. 

Geometry Problem
612
Altitude of a Triangle, Perpendicular, Congruence. 

Geometry Problem
611
Altitude of a Triangle, Perpendicular, Collinear Points, Parallel. 

Geometry Problem
610
Intersecting Circles, Radius, Parallel, Common Tangent, Angle, 90 Degrees. 

Geometry Problem
609
Triangle, Perpendiculars, 90 Degrees, Collinearity. 

Geometry Problem
608
Square with Right Triangles, Metric Relations, Congruence, Measurement. 

Geometry Problem
607
Intersecting Circles, Triangles, Metric Relations, Measurement. 

Geometry Problem
606
Isosceles Triangles, Perpendicular and Parallel Lines. 

Geometry Problem
605
Circle, Square, Chord, Perpendicular, Circular Segment, Metric Relations. 

Geometry Problem
604
Parallelograms, Triangle, Trapezoid, Area. 

Geometry Problem
603
Parallelogram, Diagonals, Congruence, Concurrency. 

Geometry Problem
602
Triangle, Angles, 30 and 45 Degrees, Cevian, Congruence. 

Geometry Problem
601
Cyclic Quadrilateral, Incenter, Excenter, Rectangle. 

Geometry in the Real World,
Houston, Texas  Slideshow and 3D Map. 

Brianchon's Theorem in a Circumscribed Hexagon. 

Geometry in the Real World,
Miami, Florida  Slideshow. 

Brianchon Corollary, Circumscribed Hexagon, Concurrency lines. 

Carnot's
Theorem in an Acute Triangle. 

Carnot's
Theorem in an Obtuse Triangle. 

Geometry Problem
600
Circle, Area, Tangent, Semicircle, Tangency Point. 

Geometry Problem 599
Regular Hexagon, Square, Midpoint, Angle, Degrees. 

iPad Apps:
MindHD, Mind Map Generator, Example using Dropbox.


The Annunciation by Leonardo and Golden Rectangles. 
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