THIS text-book should evoke in the student a realization of the infinite possibilities opened up by the many ... An Introduction to Projective Geometry By C. W. O'Hara D. R. Ward. (Pp. ix ...

This painted wire structure is a model for projective geometry. It shows four points projected to four points in different planes. A typed paper tag attached to one edge reads: No. 103 (/) 4 pts. to 4 ...

The history of drawing is so entwined with projection that the graphic lines constructing projections were literally called “pencils” in early descriptive geometry textbooks.

PROF. CRUMRINE PATTERSON declares that his motive in writing this text-book of projective geometry was "the feeling that a more complete discussion than is usual in elementary textbooks is desirable".