Go Geometry: What's New, Recent Additions, College, High School, Kids

Recent Additions (Page 1f)

Isolines illustration: The Golden Gate Bridge, Geometric Art

Ruby on Rails RoR, Index

Ruby on Rails RoR, Getting Started with Rails Mind Map.

Geometry Problem 1134.
Tangent Circles, Tangent Line, Triangle, Circumcircle, Circumcenter.

Geometry Problem 1133.
Circle, Chord, Tangent, Circumcircle, Similarity, Equal Product.

Ruby on Rails RoR Mind Map, Model–View–Controller (MVC) framework.

Geometry Problem 1132.
Triangle, Excircle, Tangency Point, Parallel, Midpoint.

Geometric Art: Square, Rhombus, Symmetry, Software.

Geometry Problem 1131.
Triangle Area, Two Cevians, Equal Product of Areas.

Geometry Problem 1130.
Cyclic Quadrilateral, Diagonals, Angle Bisector, Congruent Angles.

Geometry Problem 1129.
Isosceles Triangle, Circumcenter, Incenter, Parallel Lines, Perpendicular Lines.

Geometry Problem 1128.
Right Triangles, Medians, Parallel, Angles, Congruence, Half the measure.

Geometry Problem 1127.
Triangle, Circumcircle, Tangent, Circle, Diameter, Midpoint, Perpendicular, 90 Degrees.

Geometry Problem 1126.
Equilateral Triangle, Circumcircle, Metric Relation, Harmonic Mean, Similarity.

Geometry Problem 1125.
Triangle, Four Equilateral Triangles, Centroid, Midpoint.

Isolines illustration: The United States Capitol, Washington D.C., Geometric Art

Geometric, Geometrical, and Geometrically Terms.
Interactive Mind Map

String Art, Geometric Patterns, Bezier Curves, Symmetry - Index.
The line gets a lot of attention, with wire and string art.

Geometry Problem 1124.
Triangle, Median, Two Squares, Area.

Geometry Problem 1123.
Hexagon, Triangle, 90 Degrees, Perpendicular Lines, Vertices, Area.

Geometric Art: Circle. iPad Apps: fractBG.
Fractal Image with Circle.

Geometry Problem 1122.
Triangle, 90 Degree, Perpendicular Lines, Orthocenter, Altitude, Midpoint, Collinear Points.

Ruby on Rails RoR, Controllers, Sessions, Filters, Cookies, Data Streaming, Routing, Mind Map.

String Art 13: Bézier curves, Geometric Pattern, Symmetry, Software

String Art 12: Bézier curves, Geometric Pattern, Symmetry, Software

String Art 11: Bézier curves, Geometric Pattern, Symmetry, Software

Geometry Problem 1121: Casey's Theorem. Generalized Ptolemy's Theorem.

Geometry Problem 1120.
Isosceles Right Triangle, 120 Degree, Angle, Equilateral, Metric Relations.

Geometry Problem 1119.
Quadrilateral, Similar Triangles, Midpoints, Equal Ratio, Angles.

Kaleidoscope of Problem 514 based on Poincare Disk Model.

Geometry Problem 1118.
Right Triangle, Angle Trisection, Concyclic Points, Cyclic Quadrilateral.

Geometry in the Real World: Washington National Cathedral and Delaunay Triangulation.

Geometry Problem 1117.
Right Triangle, Angle Trisection, 90 Degrees, Parallel Lines.

Geometry in the Real World: Rome: Ponte Sant'Angelo and Basilica San Pietro & Delaunay Triangulation 2.

Geometry Problem 1116.
Right Triangle, Angle Trisection, 90 Degrees, Perpendicular Lines.

Geometry Problem 1115.
Right Triangle, Angle Trisection, Equilateral Triangle.

Geometry Problem 1114.
Right Triangle, Angle Trisection, Isosceles, Congruence.

Kaleidoscope of Word Cloud of Circle based on Poincare Disk Model.

Geometry Problem 1113.
Triangle, Perpendicular Bisector, 90 Degrees, Circle, Concyclic Points, Cyclic Quadrilateral.

Kaleidoscope of Problem 1 based on Poincare Disk Model.

Geometry Problem 1112.
Triangle, Excenters, Circumcircle, Circle, Hexagon, Area.

Geometry in the Real World: Washington National Cathedral and Delaunay Triangulation 2.

Kaleidoscope of Problem 1112 based on Poincare Disk Model.

Geometry Problem 1111.
Right Triangle, External Squares, Cathetus, Angle Bisector, Area, Geometric Mean.

Kaleidoscope of Problem 395 based on Poincare Disk Model.

Geometry Problem 724.
Post a solution
Circumscribed Quadrilateral, Circle, Angle, Incenter, Half the Measure.

Geometry Problem 1110.
Right Triangle, External Squares, Catheti, Cathetus, Angle Bisector, 45 Degree, Internal Square.

Geometry Problem 1109.
Right Triangle, External Squares, Catheti, Cathetus, 45 Degree, Angle.

Geometry Problem 1108.
Right Triangle, External Squares, Catheti, Congruence, Harmonic Mean.

Geometry Problem 1107.
Triangle, Circumcircle, Circle, Radius, Tangent, Chord, Congruence.

Adobe Slate for iPad, a Free Visual Storytelling App. Geometry Problems 1-10.

Geometry Problem 1106.
Regular Hexagon, Congruence, Diagonal, Collinear Points.

Geometry Problem 1105.
Triangle, Incircle, Excircle, Cevian, Tangent, Congruence, Geometric Mean.

Adobe Slate for iPad, a Free Visual Storytelling App Index.

Geometry Problem 1104.
Right Triangle, Incircle, Circumcircle, Inscribed Circle, Radius, Tangent.

Geometric Art: Square 2. iPad Apps: fractBG.

Geometry Problem 1103.
Right Triangle, Incircle, Inscribed Circle, Radius, Geometric Mean, Sangaku, Japanese, Metric Relations.

Geometry Problem 1102.
Right Triangle, Incircle, Tangency Point, 90 Degree, Cathetus, Metric Relations.

Geometry Problem 1101.
Triangle, Parallel Lines, Circle, Incircle, Inradius, Radius, Angle.

Geometry Problem 1100.
Triangle, Circle, Centers, Vertex, Radius, Angle.

Geometry in the Real World: Griffith Observatory, L.A. and Parallel Lines.

Geometric Art: Hexagon, Fractals. iPad Apps: fractBG.

Problem 550 Art 01.

Geometry Problems 1091 - 1100.

Geometric Art: Circle 2. iPad Apps.
Fractal Image with Circle.

Geometric Art: Rhombus. iPad Apps: fractBG.
Fractal Image with Rhombus.

Geometry Problem 1099.
Four Circles, Common External Tangent, Common Internal Tangent, Radius, Metric Relations, Sangaku Japanese Geometry.

Puzzle: Euler Line and Nine Point Center

Geometry Problem 1098.
Circles, Common External Tangent, Common Internal Tangent, Radius, Metric Relations.

Geometry Problems 1081 - 1090.

Pi Day 2015: Celebrating 12 Digits of Pi.

Geometry Problem 1097.
Quadrilateral, Inscribed Circle, 90 Degree, Angle, Area.

Geometry in the Real World: The Empire State and Delaunay Triangulation.

iPad Apps: fractBG, Triangle.
Fractal Image with Triangles.

Kaleidoscope: Geometry Problem Art 941 - 950.
iPad apps: Annamika.

Geometry Problem 1096.
Tangent Circles, Common Tangent, Chord, Radius, Center.

Geometry Problem 1095.
Externally Tangent Circles, Common Tangent, Radius, Metric Relations.

Geometry Problem 1094.
Tangent Circles, Tangent Chord, Radius, Sagitta of Arc.

Geometry Problem 1093.
Square, Circle, Tangent, Radius, Side, Sangaku, Japanese Geometry Problem.

Geometric Art: gogeometry.com Problem 1093

Jean François Niceron, 'La Perspective Curieuse', 1638,

Geometry Problem 1092.
Equilateral Triangle, Square, Circle, Tangent, 90 Degree, Sangaku.

Art: Sangaku Three circles and a tangent line.

Geometry Problem 1091.
Square, Perpendicular, Distance, Area, Center.

Geometry Problem 1090.
Circle, Diameters, Chord, Perpendicular, Metric Relations.

Geometry Problem 1089.
Square, Semicircle, Tangent, Triangle, Area.

Geometry Problem 1088.
Triangles, Perpendicular, Concurrent Lines.

Geometry Problem 1087.
Tangent Circles, Parallel, 15 Degrees, Angle.

Geometry Problem 1086.
Square, Circle, Arc, Center, Metric Relations.

Geometry Problem 1085.
Intersecting Circles, Concyclic Points, Cyclic Quadrilateral.

Geometry Art 941 - 950.
Triangle, Circles.

Lorenz Stoer, "Geometria et perspectiva", 1567, Index, Selective Colorization.

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