Here are gonna be collected all the geometry articles from the online magazine ''Crux Mathematicorum'', from the free issues 22 - 38 (1996-2012) .
Problem column with solutions (pdf links)
(collected from the Romanian Mathematical Magazine site)
4301-4400: problems - solutions
Index of Geometry Articles of # 22 -38 (pdf links)
Recurring Crux Configurations, by J. Chris Fisher
Focus On .., by Michel Bataille
History
- A Duality for Bicentric Quadrilaterals by Michel Bataille 35.5
- A Maximum Vertical Angle I by G.D. Chakerian and M.S. Klamkin 30.4
- A Maximum Vertical Angle II by D. Ruoff and J.C. Fisher 30.4.
- A Nest of Euler Inequalities by Luo Qi 37.5
- A Nice COMC Problem (B12 1999) by Daryl Tingley 26.7 [COMC = Canadian Open Mathematics Challenge]
- A Revival of an Old Construction Problem by Barukh Ziv 28.8
- A Solution to Gibson's and Rodgers' Problem in 3 Dimensions by Nguyen Minh Ha 36.8
- A Spatial Problem Solved with Stereographic Projection by Shay Gueron & Oran Lang 26.8
- A Typical Problem on an Entrance Exam for the École Polytechnique by Ross Honsberger 38.3
- A Vector Introduction to the Orthopole by Michel Bataille 31.5
- About the Japanese Theorem by Nicuşor Minculete, Cătălin Barbu & Gheorghe Szöllősy 38.5
- An Efficient Construction of the Golden Section by Kurt Hofstetter 32.6
- An Industrial Application of Spherical Inversion by Edward Crane 28.6
- Another Look at the Volume of a Tetrahedron by Nairi M. Sedrakyan 27.4
- Another Unlikely Concurrence by Jean-Louis Ayme 29.8
- Brahmagupta Quadrilaterals, A Description by K. R. S. Sastry29.1
- Butterfly Metamorphosis by Andy Liu 33.3
- Ceva meets Pythagoras! by K.R.S Sastry 22.5
- Chasing Imaginary Triangles by Ian VanderBurgh & Serge D'Alessio 31.7
- Cyclic ratio sums and products by Branko Grünbaum 24.1
- Dissecting Squares into Similar Rectangles by Andy Liu 22.6
- Dissecting Triangle into Isosceles Triangles by Byung-Kyu Chun, Andy Liu & Daniel van Vliet 22.3
- Eight Proofs of One Theorem by Jooyong Ahn, Hojoo Lee & Choongyup Sung 27.6
- Euler's Triangle Theorem by G.C. Shephard 25.3
- Folding the Regular Heptagon by Robert Geretschläger 23.2
- Folding the Regular Nonagon by Robert Geretschläger 23.4
- Generalisations of a Four-Square Theorem by Hiroshi Okumura & John F. Rigby 25.1
- Geometric Constructions of Mixtilinear Incircles by Cosmin Pohoata 35.2
- Heronian Triangles with Associated Inradii in Arithmetic Progression by Paul Yiu 23.3
- Hexagons and Inequalities by Yakub N. Aliyev 32.7
- Inequalities Involving Reciprocals of Triangle Areas by Yakub N. Aliyev 36.8
- On a Problem Concerning Two Conics by Aleksander Simonic 38.9
- On Some Examples of Geometric Fallacies by Toshio Seimiya 29.6
- On the Generalized Ptolemy Theorem by Shailesh Shirali 22.2
- One Problem - Six Solutions by Georg Gunther 24.2
- Pythagoras Strikes Again! by K.R.S. Sastry 24.5
- Tangent circles in the ratio 2 : 1 by Hiroshi Okumura & Masayuki Watanabe 27.2
- The Converse of Schiffler's Theorem by Joe Goggins 33.6
- The Diagonal Points of a Cyclic Quadrangle by Christopher J. Bradley 31.3
- The Power of Symmetry, An Example Linking Algebra and Geometry by Nicholea Gusita & Michael Silbert 29.8
- The Triangle, A Parametric Description by K.R.S. Sastry 30.8
- Velocity Analysis, an Approach to Solving Geometry Problems by Peng YuChen 35.1.
- Triangles for which $2b^2 = c^2 + a^2$ 37.5
- Triangles for which $2b = c + a$ 37.6
- Triangles whose angles satisfy $2B = C + A$ 37.7
- Bicentric Quadrilaterals 37.8
- Cyclic Orthodiagonal Quadrilaterals 38.2
- Triangles for Which OI Is Parallel to a Side 38.4
- Triangles whose angles satisfy $B = 2C$ 38.6
- Heronian Triangles 38.8
- Triangles Whose Angles Satisfy $B = 90^o + C$ 38.10
Focus On .., by Michel Bataille
History
- F.G.-M. Mystery solved by Paul Yiu 26.8
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