Vol 29

R. Manfrin
Some Remarks on Arne Dür's Equation for Oblique Axonometry
1--5 [Abstract / Full Text]

H. Katsuura
Ex-Center-Tetrahedra
7--17 [Abstract / Full Text]

J. Wittenburg, K. Egle
Sums of Distances from a Point to the Faces of Polyhedra. Generalizations of Viviani’s Theorem
19--22 [Abstract / Full Text]

S. Ouarab
Developability Conditions and Position Vectors of Ruled Surfaces According to the Darboux Frame in E³
23--32 [Abstract / Full Text]

Y. Minami
Center of the Ellipse at the Base of a Cone with a Constant Base Area
33--42 [Abstract / Full Text]

S. Abu-Saymeh, M. Hajja
More Variations on Fermat Analogue of the Steiner-Lehmus Theorem
43--53 [Abstract / Full Text]

R. Guo, N. Sönmez
Inequalities in Triangle Geometry: From Spherical to Hyperbolic
55--63 [Abstract / Full Text]

P. Csiba, D. Kamber-Hamzic, L. Németh, Z. Šabanac
Invariant Lines and a Projective Geometric Generalisation of a Geometry Problem
65--77 [Abstract / Full Text]

V. Alexandrov, E. Volokitin
Steffen’s Flexible Polyhedron Is Embedded. A Proof via Symbolic Computations
79--88 [Abstract / Full Text]

O. V. Sergeychuk, Y. V. Kozak, V. L. Martynov, N. F. Kozak
Geometric Aspects of Heat Income Energy to Facades of Buildings
89--99 [Abstract / Full Text]

S. Korotov, M. Krìžek
On Min/Max Angle Conditions for Simplices in Arbitrary Space Dimension
101--106 [Abstract / Full Text]

L. Ivanova
Fitting Curves to Point Clouds: Targeted Approximation Methods for HBIM
107--123 [Abstract / Full Text]

H.-P. Schroecker
Book review of "The Universe of Conics"
125--125 [Abstract / Full Text]