[[George Phillips Odom, Jr | George Odom]] has given a remarkably simple construction for <math>\Phi</math>''φ'': if an equilateral triangle is inscribed in a circle and the line segment joining the midpoints of two sides is produced to intersect the circle in either of two points, then these three points are in golden proportion. This result is a straightforward consequence of the [[ Power of a point | intersecting chords theorem]] and can be used to construct a regular pentagon, a construction that attracted the attention of the noted Canadian geometer [[Harold Scott MacDonald Coxeter | H. S. M. Coxeter]] who published it as a diagram in the ''[[American Mathematical Monthly]]'' accompanied by the single word "Behold!" <ref>{{cite web|title=Quandaries and Queries|url=http://mathcentral.uregina.ca/qq/database/QQ.09.02/mary1.html|publisher=Math Central|accessdate=23 October 2011|author=Chris and Penny}}</ref>
