We must also remember that the ellipse is an oblique projection of a circle, or an oblique section of a cone.
"The Theory and Practice of Perspective" by George Adolphus Storey
A tiny cone, obliquely truncated, overlooked this rugged line and joined on with its gentle slope to the sinuous crest of the hills.
"Godfrey Morgan" by Jules Verne
This cone is crossed obliquely by two zigzag flashes of lightning, terminating at either end in arrow-points.
"The New England Magazine Volume 1, No. 6, June, 1886, Bay State Monthly Volume 4, No. 6, June, 1886" by Various
In geometry, an oval figure, formed of the section of a cone by a plane cutting through both its sides obliquely.
"The Sailor's Word-Book" by William Henry Smyth
Here also appear a new form of fruit, the oblique cone, and a new method of dissemination, the serotinous cone.
"The Genus Pinus" by George Russell Shaw