Journal for geometry and graphics, Tome 24 (2020) no. 2

Geodesic

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Volume 24 (2020) no. 2

Sommaire

Recalling Thread Constructions of Quadrics

H. Stachel

p. 143-157

The Ellipse, Monge’s Circle and Other Circles

M. Ternullo

p. 159-173

The Pentagrammum Mysticum, Twelve Special Conics and the Twisted Icosahedron

N. Le ; N. J. Wildberger

p. 175-191

Geometric Inequalities on Parallelepipeds and Tetrahedra

A. Bailey ; H. Katsuura

p. 193-196

On some Extensions of Morley’s Trisector Theorem

N. Dergiades ; T. Q. Hung

p. 197-205

A Rational Trigonometric Relationship Between the Dihedral Angles of a Tetrahedron and its Circumradius

G. A. Notowidigdo

p. 207-216

The Circumcevian-Inversion Perspector of Two Triangles

Suren ; P. J. C. Moses ; C. Kimberling

p. 217-232

Permutation Ellipses

C. Kimberling ; P. J. C. Moses

p. 233-247

On CR-Structures and the General Quadratic Structure

M. N. I. Khan ; L. S. Das

p. 249-255

Ruled Surface Generated by a Curve Lying on a Regular Surface and its Characterizations

S. Ouarab ; A. O. Chahdi ; M. Izid

p. 257-267