Caption: The conic sections can be generated by projecting the circle formed by the intersection of a cone with the reality plane perpendicular to the cone's central axis.
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 38.40 MB

Caption: The eye connects to points on the reality plane by sight lines that intersect with the picture plane, generating the drawing.
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 29.31 MB